What's That Rash?

We've been searching for a fountain of youth for millennia. How can we not only live longer, but live healthier for longer? Nicotinamide adenine dinucleotide (NAD) is the latest anti-ageing candidate under the microscope. Norman and Tegan explain what it is, and whether supplements promising to boost NAD actually do what's advertised on the bottle. References: NAD+ metabolism and its roles in cellular processes during ageing NAD+ in Brain Aging and Neurodegenerative Disorders What is really known about the effects of nicotinamide riboside supplementation in humans Dietary Supplementation With NAD+-Boosting Compounds in Humans: Current Knowledge and Future Directions The use of a systems approach to increase NAD+ in human participants Specific ablation of Nampt in adult neural stem cells recapitulates their functional defects during aging

Vampires and werewolves and zombies, oh my! Where did all these monsters come from? Undiagnosed medical conditions might have fuelled the mythology behind some of these creatures. Norman and Tegan delve into why vampires drink blood, why werewolves howl at the full moon and how a hex might have its intended effect. References: ABC's FrankenScience: Can Vampires Get Syphilis? and Witchcraft or Just a Placebo? All in the Mind: What's behind a paranormal experience? Porphyria and Vampirism—A Myth, Sensationalized Moon and Health: Myth or Reality? The undead in culture and science Reversibility of apoptosis in cancer cells Medical practice and placebo response: an inseparable bond?

It’s hay fever season, and as you sniffle away next to an air purifier, you might be wondering why we haven’t cured such a common ailment. Allergic rhinitis, as it’s scientifically known, has plagued people for generations. It's thought up to 24 per cent of Australians suffer from it. Norman and Tegan run through what hay fever is, how we identified it and what can be done to treat it.  References: Allergic Rhinitis: A Review O Rose thou art sick… history of allergic rhinitis I’m considering allergen immunotherapy for my hay fever. What do I need to know? Ingestion of honey improves the symptoms of allergic rhinitis: evidence from a randomized placebo-controlled trial The Potential use of Honey as a Remedy for Allergic Diseases: A Mini Review Can you adapt to allergies or does the dog have to go?

Many of us are disconnected from nature – we live in cities, work in offices, exercise indoors. There is a hypothesis that our disconnection from the earth itself – the ground – is causing a range of illnesses. But the people selling this hypothesis are also trying to sell you a range of expensive products. Norman and Tegan debunk a pseudoscience that has been gaining traction. References: Electrical Grounding Improves Vagal Tone in Preterm Infants Associations between Nature Exposure and Health: A Review of the Evidence

Monosodium glutamate (MSG) is a flavour enhancer that often gets a bad wrap. You might know someone who swears it makes them sick, or you yourself might steer clear of foods unless they have that 'no added MSG' label. Norman and Tegan explain why the bad PR around MSG has more to do with shonky research and misconceptions than the ingredient itself. References: MSG in food - Food Standards Australia and New Zealand A review of the alleged health hazards of monosodium glutamate Monosodium glutamate sensitivity in asthma Chinese-Restaurant Syndrome - New England Journal of Medicine

If you've found yourself in a particular corner of health and wellness TikTok, chances are you've heard all about cortisol. Influencers might be urging you to massage your face, stuff your mouth full of dates and even supplement your diet with sea moss. Norman and Tegan explain why some of that MIGHT make you healthier, but not in the way that you think.  References Forgotten episodes of the birth of cortisone The effects of exercise intensity on the cortisol response to a subsequent acute psychosocial stressor Signalling cognition: the gut microbiota and hypothalamic-pituitary-adrenal axis

If you've ever complained about a bad night's sleep, you might've been urged to take melatonin.  It's a hormone our bodies naturally produce, and also a supplement that many claim can cure insomnia and leave you better rested.  But Norman and Tegan tuck into all the reasons we shouldn't be taking melatonin lightly.  References What do we really know about the safety and efficacy of melatonin for sleep disorders? Is melatonin safe for children? Quantity of Melatonin and CBD in Melatonin Gummies Sold in the US Clinical trial on the effect of regular tea drinking on iron accumulation in genetic haemochromatosis

Iron deficiency is incredibly common, especially in menstruating women. But this mineral is vital. Our bodies use iron to make haemoglobin, which carries oxygen to our cells. Norman and Tegan take us through what it means to have adequate iron levels, and what it takes. References A Review of Nutrients and Compounds, Which Promote or Inhibit Intestinal Iron Absorption Intermittent iron supplementation for reducing anaemia and its associated impairments in adolescent and adult menstruating women The yersiniabactin transport system is critical for the pathogenesis of bubonic and pneumonic plague

It's a tale as old as time – as you age, hangovers hit harder. The tolerance of your youth wastes away. There's no doubt that any alcohol consumption is bad for you. But that doesn’t mean people aren't drinking. Norman and Tegan explain what alcohol is doing to the body, and why the after effects get harder to cope with as you get older. References The Assessment of Overall Hangover Severity Aldehyde dehydrogenase isozyme variation and alcoholism in Japan Endogenous formation of 1-propanol and methanol after consumption of alcoholic beverages Understanding trends in Australian alcohol consumption—an age–period–cohort model The Alcohol Hangover Research Group: Ten Years of Progress in Research on the Causes, Consequences, and Treatment of the Alcohol Hangover

We get a LOT of questions about sleep – on everything from cheese dreams to sleep farts. Why do you jerk awake as you're drifting off? Why are you itchy as soon as you get into bed? Norman and Tegan snooze through some sleep-related questions in this rapid-fire special. References Too Sour to be True? Tart Cherries (Prunus cerasus) and Sleep: a Systematic Review and Meta-analysis Dreams of the Rarebit Fiend: food and diet as instigators of bizarre and disturbing dreams Sleeping position during early and mid pregnancy does not affect risk of complications The Relationship between Sleeping Position and Sleep Quality: A Flexible Sensor-Based Study Nocturnal Pruritus: The Battle for a Peaceful Night’s Sleep

It might not seem like it, but we humans are electrical beings. We rely on electrical impulses to stay alive. So can we rely on electrical impulses … to get swole? Norman and Tegan investigate the various claims surrounding electrical muscle stimulation. References  Functional Electrical Stimulation and Spinal Cord Injury Effects of Neuromuscular Electrical Stimulation After Anterior Cruciate Ligament Reconstruction on Quadriceps Strength, Function, and Patient-Oriented Outcomes : A Systematic Review Feasibility and efficacy of progressive electrostimulation strength training for competitive tennis players Effects of Whole-Body Electromyostimulation on the Energy-Restriction-Induced Reduction of Muscle Mass During Intended Weight Loss

The Mediterranean diet is the most well studied dietary pattern out there. So – what is it? It’s more than just vegetables, whole grains, healthy fats and sparing consumption of meat. Norman and Tegan take us through ALL the elements that make up this way of eating, which has been attributed to a myriad of health benefits. References Scientific evidence supporting the newly developed one-health labeling tool “Med-Index” Mediterranean diet and health outcomes: a systematic meta-review Perspective: Beyond the Mediterranean Diet—Exploring Latin American, Asian, and African Heritage Diets as Cultural Models of Healthy Eating

In some parts of the world sauna bathing is a daily activity. In Finland, it would even be rude to deny an invitation to get hot and sweaty with a business associate. As well as being culturally significant, the sauna has many touted health benefits – from protecting against cardiovascular disease, to fending off cognitive decline. Norman and Tegan sort through the evidence. References The multifaceted benefits of passive heat therapies for extending the healthspan: A comprehensive review with a focus on Finnish sauna Association Between Sauna Bathing and Fatal Cardiovascular and All-Cause Mortality Events Cardiovascular and Other Health Benefits of Sauna Bathing: A Review of the Evidence

Many people go through phases of nail biting in childhood, and fewer people continue biting their nails into adulthood. It's a habit that can be difficult to break – especially when anxiety can be a trigger, along with boredom. Norman and Tegan take us through the current treatments available for people who want to stop munching on their cuticles. References Onychophagia and onychotillomania can be effectively managed Prevalence and correlates of clinically significant body-focused repetitive behaviors in a non-clinical sample Habit reversal vs. negative practice treatment of nailbiting A review of N-acetylcysteine in the treatment of grooming disorders

If you're glued to your couch watching the Paris Games, you know that elite athletes are beyond impressive. But does that mean they're healthy? Not necessarily. Norman and Tegan unpack the positive and negative impacts of elite-level sport on the body and the mind. References Female and male US Olympic athletes live 5 years longer than their general population counterparts: a study of 8124 former US Olympians Long-term function, body composition and cardiometabolic health in midlife former athletes: a scoping review The mental health of Australian elite athletes Adaptation to life after sport for retired athletes: A scoping review of existing reviews and programs

Offices are catching up to the idea that sitting for eight hours a day might not be great for your health. Standing desks, adjustable monitors and hand rests are common tools in the arsenal of ergonomics. But are we getting it all wrong? Norman and Tegan dispel some myths about the impact of office jobs on the body. References Having 'good' posture doesn’t prevent back pain, and 'bad' posture doesn't cause it Evaluating the Evidence on Sitting, Smoking, and Health: Is Sitting Really the New Smoking? The effectiveness of physical and organisational ergonomic interventions on low back pain and neck pain: a systematic review

Bodies are weird … but are they THAT weird? Sexually-induced sneezing has been written about in medical texts for hundreds of years. In this live episode from the World Science Festival Brisbane, Norman and Tegan explain what it is, and why it might happen. References Sneezing induced by sexual ideation or orgasm: an under-reported phenomenon

You've either seen it, or you've tried it. Ice baths are all the rage right now, in part because they claim to be an effective health and wellbeing booster. Is this just a fad, or is there solid evidence that dipping into freezing cold water can improve your immune system, calm down inflammation and better your mood? Norman went for the plunge – and lived to tell Tegan the tale. Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! References Does the Wim Hof Method have a beneficial impact on physiological and psychological outcomes in healthy and non-healthy participants? A systematic review Getting colder ... the invigorating effect of ice baths - The Health Report

Once you get past the initial ick-factor of toothbrush sharing, it's worth considering whether there are any actual harms. Whether we like it or not, our mouths are home to a unique microbiome. As Norman and Tegan explain, it's influenced by what we eat, who we kiss – and yes, who we might share a toothbrush with. References Armed to the Teeth—The Oral Mucosa Immunity System and Microbiota Assessment of Microbial Contamination of a Toothbrush Head with and without a Protective Cover: An Ex Vivo Study

There's no doubt people with coeliac disease should stay away from gluten, but what about the rest of us? There is nothing inherently harmful about gluten when it doesn’t cause you gut trouble. Norman and Tegan talk us through why a gluten-free diet is not necessarily a healthy one. Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! References Avoiding gluten when you’re not a coeliac - Health Report Coeliac disease: review of diagnosis and management Gluten-Free Diet: Gaps and Needs for a Healthier Diet Gluten-free diet may increase risk of arsenic, mercury exposure

Feeling yuck? Have you ever wondered about the purpose of all that gunk you're coughing up? At least one of our listeners has … and she wants to know whether there’s any benefit to spitting or swallowing… In this live episode from the World Science Festival Brisbane, Norman and Tegan take us through the answer.

It might feel like this wrinkle-busting procedure has been around forever, but it's a relatively recent cosmetic concoction. At first, it was a procedure for already aged skin. Now 20-somethings are using it to try prevent wrinkles from ever forming. Norman and Tegan unpack how we got to this point, and the do's and dont's of the procedure. References: The whole truth about botulinum toxin – a review Botulinum toxin type A for facial wrinkles - Cochrane review Botulinum Toxin and Muscle Atrophy: A Wanted or Unwanted Effect

For the meat eaters still out there, you may be wondering how much is too much when it comes to your health. You will have to weigh up the benefits and the harms. Norman and Tegan take us through the recommendations, and the science to back them up. References: Health effects associated with consumption of unprocessed red meat: a Burden of Proof study Red Meat and Processed Meat Consumption and All-Cause Mortality: A Meta-Analysis Plant-based diets and long-term health: findings from the EPIC-Oxford study

Apple cider vinegar is revered in wellness spaces for its health-giving benefits, but is there anything to it? There are claims it can aid with weight loss, boost your gut microbiome and manage blood sugar levels.  Norman and Tegan explain how this salad dressing became so famous, and what the science tells us. References: Apple cider vinegar for weight management in Lebanese adolescents and young adults with overweight and obesity: a randomised, double-blind, placebo-controlled study  Antibacterial apple cider vinegar eradicates methicillin resistant Staphylococcus aureus and resistant Escherichia coli The improvement effect of apple cider vinegar as a functional food on anthropometric indices, blood glucose and lipid profile in diabetic patients: a randomized controlled clinical trial Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you!

Sometimes 24 hours doesn’t feel like nearly enough time to get everything done — those to-do lists aren't going to check themselves. Especially when you're spending around eight hours of that time in bed. Norman and Tegan assess whether it's possible to train yourself to sleep less without any of the negatives. References: Which Is More Important for Health: Sleep Quantity or Sleep Quality? Sleep in the Military Familial natural short sleep mutations reduce Alzheimer pathology in mice What's That Rash? on napping and Norman's nap-time tips

It's an age-old adage that youth is wasted on the young – you don't know what you’ve got until it's gone. The aches and pains that start to linger longer as you approach your 30s can feel like a rite of passage. Norman and Tegan explore why this happens, and whether it's inevitable. Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! References: Does your body really start falling apart in your 30s? - ABC Health Age changes in pain perception: A systematic-review and meta-analysis of age effects on pain and tolerance thresholds Declining muscle mass is part of aging, but that does not mean you are helpless to stop it

Dementia is common – more than 400,000 Australians are living with it – but it’s not an inevitable part of ageing. There are ways to lower your risk, and the sooner you start, the better off you’ll be. Norman and Tegan give us the top tips needed to lower your risk of developing the illness as you get older. References: Physical and Mental Activity, Disease Susceptibility, and Risk of Dementia: A Prospective Cohort Study Based on UK Biobank Association of Lifespan Cognitive Reserve Indicator With Dementia Risk in the Presence of Brain Pathologies Drugs Contributing to Anticholinergic Burden and Risk of Fall or Fall-Related Injury among Older Adults with Mild Cognitive Impairment, Dementia and Multiple Chronic Conditions

Much has been said about the single glass of red wine. It's good for you, it’s bad for you, it's good for you again. It can be confusing to follow. Norman and Tegan take on this age-old health question — does a single glass of red wine have health boosting benefits? References:  The French paradox: Lessons for other countries Moderate Wine Consumption and Health: A Narrative Review Health Effects of Red Wine Consumption: A Narrative Review of an Issue That Still Deserves Debate

Do you have your water bottle beside you right now? How close are you to reaching your daily water goal? It can feel like a slog sometimes to meet the recommended two lites of water a day. Norman and Tegan pour over the evidence to find out whether it's REALLY necessary to drink that much. References: Food and macronutrient intake of elite Ethiopian distance runners Statement of the 3rd International Exercise-Associated Hyponatremia Consensus Development Conference

As the weather cools down, you may be noticing more people around you are dropping from cold or flu. And with COVID-19 also in the mix, it’s understandable that many are wondering how they can boost their immunity to avoid getting sick so often. Norman and Tegan take us through some of the approaches that have the evidence to back them up (and the ones that don’t). References: Nutrition and Athlete Immune Health: New Perspectives on an Old Paradigm Effect of air pollution on the human immune system Current Directions in Stress and Human Immune Function

It can sometimes be tough to summon the motivation and energy to go to exercise.  Well, there’s a product for that and it’s gaining popularity. Pre-workout mixtures come in powders, pills, drinks, gummies — you name it, they’ve got it. Norman and Tegan run through what they actually contain, and what the evidence says about their effectiveness… Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! References:  Multi-ingredient pre-workout supplements, safety implications, and performance outcomes: a brief review Effects of Beta-Alanine on Muscle Carnosine and Exercise Performance:A Review of the Current Literature Creatine Supplementation for Muscle Growth: A Scoping Review of Randomized Clinical Trials from 2012 to 2021

When you get a headache, what do you reach for? Ibuprofen, aspirin or paracetamol? Over-the-counter painkillers can be difficult to differentiate, but they do vary, not only in their effectiveness but also in their side effects. Norman and Tegan talk us through how these drugs work, and which one might be best depending on your situation. References:  Paracetamol versus ibuprofen – which works best and when? Is paracetamol effective for low back pain? The dangers of NSAIDs: Look both ways

Restless Legs Syndrome is a common condition with somewhat mysterious underpinnings… While it can be a side effect on an underlying condition, many people suffer for no known reason. Norman and Tegan take us through what we know, what we suspect and some of the treatments for those jittery legs… References: Iron and restless legs syndrome: Treatment, genetics and pathophysiology Iron-deficiency and dopaminergic treatment effects on RLS-Like behaviors of an animal model with the brain iron deficiency pattern of the restless legs syndrome The Management of Restless Legs Syndrome:An Updated Algorithm Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you!

Kate Middleton announced via a video message that she is undergoing treatment for cancer.  The Princess of Wales has been out of the public eye since Christmas. This is the first official announcement about her condition since she revealed she would be undergoing planned abdominal surgery in January.  So what What do we know about Kate's cancer diagnosis? What is the likely treatment? And, given she is relatively young, what's the message for people who do have unexpected new symptoms? What is preventative chemotherapy? What could treatment look like? What are some of the side effects of chemotherapy? How long does it take to recover from? We're answering the health questions everyone's asking on What's That Rash?

Did you know that we're evolutionarily predisposed to seek out sweet treats? Simple carbs were harder to come by in caveman times than they are today. Now, the consensus is we all need to cut down our sugar intake. One way people are doing that is by replacing their sucrose with non-sugar sweeteners. Norman and Tegan explore whether this is actually a healthy alternative. References: Sweetness and food preference Health effects of the use of non-sugar sweeteners: a systematic review and meta-analysis The World Health Organisation on aspartame, and dietary guidelines

Although it’s often thought of as an adolescent affliction, acne can affect people well into adulthood. But some people seem to be immune to pimples. Why? Norman and Tegan investigate why some people are more prone to pimples than others, and what you might be able to do about it. Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References: Racial Differences in Clinical Characteristics, Perceptions and Behaviors, and Psychosocial Impact of Adult Female Acne The association between stress and acne among female medical students in Jeddah, Saudi Arabia Seasonal aggravation of acne in summers and the effect of temperature and humidity in a study in a tropical setting Enjoyment of watching pimple popping videos: An fMRI investigation

Some people are mosquito magnets. The blood suckers do, in fact, have their favourites.  And this could pose a major health risk. After all, mosquitoes are the deadliest creatures on earth.  Norman and Tegan take us through the science of why some people attract more mozzies than others.  Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References: Mosquitoes use vision to associate odor plumes with thermal targets Olfactory responses and field attraction of mosquitoes to volatiles from Limburger cheese and human foot odor Composition of Human Skin Microbiota Affects Attractiveness to Malaria Mosquitoes

What's That Rash? is coming to the World Science Festival Brisbane! Bring yourself (and your non-communicable rash) to a live podcast recording with Dr Norman Swan and Tegan Taylor.  We've got two double passes to give away to the Social Science event on March 22 for those who'll be in Brisbane. Send us your questions for a chance to win. AND it's an adults-only event with mature content and coarse language, so go wild —  thatrash@abc.net.au We're not the only ones attending. All in the Mind will also be doing a live show, and Dr Karl will be there for some Great Moments in Science!

Have you ever been told to 'listen to your body' when it comes to fitness? It makes sense. You shouldn't push through injury, or past the point of exhaustion. But how far is too far? There are now dozens of apps and hundreds of advice columns on how best to 'listen to your body'. One strategy that's rising in the ranks is adjusting your workout routine to work alongside your menstrual cycle. Norman and Tegan explore whether this kind of tech is advancing faster than the research. References: Effects of the Menstrual Cycle on Exercise Performance The Efects of Menstrual Cycle Phase on Exercise Performance in Eumenorrheic Women: A Systematic Review and Meta‑Analysis Bidirectional Interactions between the Menstrual Cycle, Exercise Training, and Macronutrient Intake in Women: A Review

The only time most of us think about wisdom teeth is when they’re causing trouble. Do they have a use beyond causing pain (and leaving you with a hefty dental bill)? Norman and Tegan talk through the history of these meddlesome molars, and what happens when you ignore them. Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References:  Surgical removal versus retention for the management of asymptomatic disease‐free impacted wisdom teeth Prevalence of Third Molar Agenesis: Associated Dental Anomalies in Non-Syndromic 5923 Patients Childhood diet may contribute to impacted wisdom teeth, research shows

Let's say you're a pretty healthy person. You have a balanced diet, exercise regularly and don't have any health issues. A multivitamin can only help, right? Not necessarily. There are lots of multivitamins out there, catering to different circumstances. Norman and Tegan take us through the evidence for (and against) taking these catch-all supplements. Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References:  Should I Take a Daily Multivitamin? Dietary antioxidants and primary prevention of age related macular degeneration: systematic review and meta-analysis Dietary flavanols restore hippocampal-dependent memory in older adults with lower diet quality and lower habitual flavanol consumption

Thousands of Australians see a chiropractor for relief from back pain, headaches or stiffness. There has been a level of controversy surrounding the profession since its inception in the 19th century. But looking beyond the field's storied history, where does the evidence stand now on chiropractic? Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References:  Evidence-Based Practice and Chiropractic Care Benefits and harms of spinal manipulative therapy for the treatment of chronic low back pain: systematic review and meta-analysis of randomised controlled trials Anatomical Sciences in Chiropractic Education: A Survey of Chiropractic Programs in Australia A Phase 3 Randomised Trial of Nicotinamide for Skin-Cancer Chemoprevention

There are so many weird and wonderful skin potions out there, promising to fend off or reverse the signs of ageing. But do they work? And if so, how do they work? Norman and Tegan take us through their skincare routines (and some evidence, of course). Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References:  Genetics and skin ageing - Dermato-Endocrinology Retinoids: Active molecules influencing skin structure formation in cosmetic and dermatological treatments Role of antioxidants in the skin: Anti-ageing effects

Night terrors are distressing awakenings of intense screaming, thrashing and fear that often happen at the same time each night.  They're more common in children than in adults, but they can hang around or emerge later in life.  Norman takes us through his own childhood night terror, and Tegan weighs in on some of the reasons they happen in the first place.  Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References:  Night Terrors: Clinical Characteristics and Personality Patterns An evolutionary perspective on night terrors

Have you ever been chastised for eating a bowl of cereal for lunch? Or having leftovers for breakfast? There are certain foods designed 'breakfast foods' in the collective imagination: eggs, toast, cornflakes, pancakes.  But the stories of how they came to earn their morning timeslot are far from science-based.  Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References:  Is breakfast the most important meal of the day? Bath Breakfast Project Towards an Evidence-Based Recommendation for a Balanced Breakfast Breakfast skipping and timing of lunch and dinner: Relationship with BMI and obesity

No pain, no gain — right? Well, if you're looking to build muscle, not necessarily. Chasing discomfort might even slow you down.  Norman and Tegan discuss delayed-onset muscle soreness, and why it's not always indicative of a good workout.  Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References: Delayed Onset Muscle Soreness and Critical Neural Microdamage-Derived Neuroinflammation Post Orgasmic Illness Syndrome (POIS) and Delayed Onset Muscle Soreness (DOMS): Do They Have Anything in Common? Effects of Descending Stair Walking on Health and Fitness of Elderly Obese Women “The Glorious Pain”: Attaining Pleasure and Gratification in Times of Delayed Onset Muscle Soreness (DOMS) among Gym Goers

Because of the country's high UV levels, Australians hear a lot about the risks of sun exposure. But there are some benefits too.  Sunlight enables us to produce vitamin D for strong bones and immune function. But there are other ways rays can help our health.  Norman and Tegan take a look at how the right dose of sunlight can be beneficial.  Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References: The effect of sunscreen on vitamin D: a review Sanatoria revisited: sunlight and health

Pet allergies can range from mild to severe — from a nuisance to, occasionally, anaphylaxis.  When all you've got is some itchiness and a runny nose, are you doomed to a life without a furry friend? Norman and Tegan discuss the possibility of building up a tolerance to allergens.   Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References:  Dog ownership at three months of age is associated with protection against food allergy Sensitisation, asthma, and a modified Th2 response in children exposed to cat allergen Specific gut microbiome signatures and the associated pro-inflammatory functions are linked to paediatric allergy and acquisition of immune tolerance

It's holiday season, and family feasts are inevitable. But is the post-feast nap also inevitable? Norman and Tegan explain why you get so tired after a big meal. And no ... it has nothing to do with being around your extended family. Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report

Binaural beats are a phenomenon that happens in your brain when you listen to two different tones in each ear.  There are lots of claims surrounding them — that they can trigger different brain waves and promote different states of mind.  Norman and Tegan are here to unpack whether there's any evidence this musical illusion can aid with concentration.  Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References: Reverse effect of home-use binaural beats brain stimulation Pilot feasibility study of binaural auditory beats for reducing symptoms of inattention in children and adolescents with ADHD Binaural beats reduce feeling of pain and discomfort during colonoscopy procedure in not-sedated patients

Caffeine is a part of many people's routines, whether it be a shot of coffee or a cup of tea.  If you've ever noticed a headache creeping in when you've missed your morning cup of joe, Norman and Tegan are here to explain why.  Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References: Adenosine, caffeine, and sleep–wake regulation: state of the science and perspectives Caffeine for headaches: Helpful or harmful? Caffeine in the management of patients with headache

Napping can be risky. Will you wake up feeling better or worse? There's no doubt that sometimes an afternoon snooze is an absolute necessity.  Norman and Tegan explore what's going on when you nap, and what you can do to get the most benefit. References: Influence of mid-afternoon nap duration and sleep parameters on memory encoding, mood, processing speed, and vigilance Lifestyle mediators of associations among siestas, obesity, and metabolic health Effects of planned cockpit rest on crew performance and alertness in long-haul operations

If you've ever been told to take a probiotic — after a course of antibiotics, or just for your general health — you may be wondering what they actually do.  Well, Norman and Tegan are here to dig into the research about these over-the-counter supplements, which claim to support digestion, boost immunity and even improve mood.  Got a health question? Shoot us a line @ABCHealth on Instagram, or send a voice memo to thatrash@abc.net.au. We'd love to hear from you! Looking for COVID-19 updates? Don't panic, they've moved over to The Health Report References: Probiotics for the prevention of paediatric antibiotic-associated diarrhoea  Multispecies Probiotic for the Prevention of Antibiotic-Associated Diarrhoea in Children A systematic review of gut microbiota composition in observational studies of major depressive disorder, bipolar disorder and schizophrenia  Post-Antibiotic Gut Mucosal Microbiome Reconstitution Is Impaired by Probiotics and Improved by Autologous FMT

Wherever you look, viruses are going into and coming out of animals. Mostly this happens without much fanfare, though occasionally it causes big problems. Which is why it's concerning that researchers in Europe have started to sound the alarm about fur farms in Europe and other researchers looking at pig farms have found more swine flu variants than they expected. So what's going on?   References: Infection prevention and control in the context of coronavirus disease (COVID-19): a living guideline, 10 August 2023 Highly pathogenic avian influenza A(H5N1) virus infection on multiple fur farms in the South and Central Ostrobothnia regions of Finland, July 2023 The genomic landscape of swine influenza A viruses in Southeast Asia

If you think that excavating your nose is a harmless if somewhat disgusting habit - think again. A new study reckons you could emerge with COVID-19. Other studies worry about how forgetful having your fingernail so close to the brain might make you. And have you ever given thought to your nasal microbiome much less what our primate cousins get up to (hint: it's even more disgusting)? We drill deep on rhinotillexis. References Rhinotillexomania: psychiatric disorder or habit? A review of nose picking in primates with new evidence of its occurrence in Daubentonia madagascariensis Staphylococcus aureus and the ecology of the nasal microbiome

We've said it before and we'll say it again - make sure you get your booster dose.  But what, you ask, is in it for me? How likely am I to be the one who dodges severe disease?  Well a new study has quantified this. It's a number familiar to epidemiologists - the number needed to treat to prevent a certain outcome.  Also this week: where are we at with repurposing existing drugs to prevent COVID?  What's happening with flu numbers? And who was Tegan's surprise fluffy office visitor?

In the early days of COVID, we used wastewater surveillance to spot undetected community transmission. Our sewage gave public health authorities early alerts that COVID was spreading. Wastewater surveillance also gives information on sub variants: what's on the rise and what's in decline. But there's other stuff in wastewater - and it's downright criminal.  That's captured on today's rather smelly Coronacast. References: A common allele of HLA is associated with asymptomatic SARS-CoV-2 infection Viral and antibody dynamics of acute infection with SARS-CoV-2 omicron variant (B.1.529): a prospective cohort study from Shenzhen, China

A lot has been said about COVID antivirals, especially on how they might help bring down the number of deaths from the disease. But occasionally an interesting phenomenon occurs: a patient takes the antiviral drugs, feels better, only to come down with COVID again. So how do COVID antivirals work and why does the rebound sometimes happen?

It's the depths of winter, and every second person you know has a cold of some sort.  Most are mild but some can hit hard - as we all know from COVID and influenza. But what about the third virus in the unholy trinity of winter bugs?  RSV, or respiratory syncytial virus, is tracking a lot higher than usual for this time of year.  Who's most at risk, how can you protect yourself, and how much do the numbers have to do with increased testing overall? Oh, and what does "syncytial" even mean?

It was a massive question at the start of the pandemic: is Sweden's strategy of keeping things open a better way forward? Zoom ahead a few years, and it's still on the minds of Coronacast listeners. This week, we're digging into what happened in Sweden and we also answer a question about the psychological impact of the pandemic on teenagers. Everything and more, on this week's Coronacast. Ask a question here: https://yourquestions.abc.net.au/hc/en-au/requests/new?ticket_form_id=360002468535

Our immune system does an amazing job keeping us healthy - but it works in mysterious ways, especially when it comes into contact with novel viruses like SARS-CoV-2. We've talked a bit before about imprinting - the concept where the first time your immune system sees a virus can determine how it'll react to that virus in the future. And a recent study in the prestigious journal Science has found the Omicron variant could be taking advantage of that - possibly showing why people seem to be getting repeat Omicron infections. So what could this mean for public vaccination strategy and our risk of reinfection?

We've all heard that COVID spreads in clusters and sometimes the cluster comes from a single person who can infect nearly everyone around them. They're superspreaders and it's been opaque how much virus a superspreader is actually responsible for spreading around. Now a study has found that in a group of deliberately infected people, just two of them were responsible for nearly 90 percent of all the virus emitted - even though they only had mild symptoms.

Sometimes a study comes along that shows some amazing results and one published in The Lancet does just that. The study - which looked at people aged between 30 and 85 who were overweight or had obesity - has found a "globally available, low-cost, and safe" diabetes drug called metformin could drastically reduce the instances of long COVID by 40 per cent. Sadly they didn't find the same results with ivermectin (and they looked). So what could be going on? How could this old drug be so good at what it's doing? And how could this drug be used to help bring down long COVID cases? That's on this week's Coronacast - along with a clarification of NSW hospital data and antiviral prescriptions. Or watch us on YouTube here

Tegan has been playing away, making another show. It's called Quick Smart, and because you're such a loyal Coronacast listener, we'll give you a preview here.  If you like it, please find the Quick Smart feed and subscribe!  This first ep is about something weird that's happened in the last 12 months or so - the fact that all your friends - and perhaps you as well - have ADHD now. So where did this ADHD spike come from? Just how big is the gap between people seeking treatment and those able to give it? And if people are being overdiagnosed, or underdiagnosed, or diagnosed with the wrong thing... what are the risks? Check it out here!

The public health measures we relied on in years past to control COVID have now largely gone. Social distancing is no more and there aren't nearly as many masks around as there once was and we're grossly under-immunised. So what about antivirals? Could making them more available to more people be a way to reduce the amount of severe disease and limit the waves of COVID? Watch us on YouTube: https://www.youtube.com/watch?v=gE7At1S7tho

Long COVID has nearly been around as long as COVID itself.  It wasn't long after the pandemic began before we started hearing about long haulers - people who were suffering from the virus long after testing negative. But even today, we still don't know the precise definitions of what exactly long COVID is and how many people suffer from it. But we are getting closer to a clearer picture. So why is it important to know?

In 2021, Aussies were queueing round the block quite literally for COVID-19 vaccines one and two.

As respiratory disease goes, COVID got us good. But it's important we don't forget the old school ones like flu and RSV. There's quite a bit of flu around at the moment too. It could even be described as a surge.  So what's going on? Why are we being attacked by COVID, flu and RSV all at once? Also on today's show: * Remember that time a stranger made Norman stick something up his nose in an abandoned dungeon?  * What's going on in China now that they've dropped COVID restrictions?

With the World Health Organisation (WHO) announcing that COVID-19 is no longer a "global health emergency", you'd be forgiven for thinking the pandemic's over. But alas, it isn't. According to WHO, the "emergency" phase is over but COVID will remain a persistent threat for a lot longer, saying the disease is still killing someone every three minutes. So how can COVID no longer be an emergency, but also remain so deadly?

The Omicron variant has been spinning off all sorts of sub variants during its 17 month long reign. The latest is XBB.1.16 - known also as Arcturus - and like its sibling sub variants doesn't seem to be all that different. But while Arcturus is busy trying to become the most popular sub variant of the month, we are undergoing another wave of infections.  There are hundreds of people in hospitals around the country and it's continuing to affect how the health system operates. Also on the show: Is COVID going to the dogs?

The coronavirus pandemic might not be a 'pandemic' for much longer So, looking ahead, experts have come together to propose countermeasures for future epidemics and pandemics.  It's all about transparency and equity at a global scale.  References: It is time for ambitious, transformational change to the epidemic countermeasures ecosystem

A team has analysed data out of China, proving the presence of animals in the Wuhan market capable of hosting SARS-CoV-2.

Another wave of COVID infections seems to be underway in parts of Australia, and NSW is leading the pack.  The variant soup is getting more complex by the day — but luckily the dominant mutations don't seem to be causing more severe disease.  Regardless, as more people get infected and re-infected, researchers are fast at work trying to determine what might protect people from long-term consequences.  References:  Adherence to Healthy Lifestyle Prior to Infection and Risk of Post-COVID-19 Condition Severe COVID-19 outcomes by cardiovascular risk profile in England in 2020: a population-based cohort study

In 2022, Australia saw an estimated 12% increase in the number of deaths compared to expert predictions.  More than half of those were due to COVID-19. And there are signs that even the deaths that couldn't be directly linked to COVID-19 are a result of the pandemic.  This pattern isn't just playing out in Australia, but around the globe. So what are the driving factors, and what can be done to address them? References:  Almost 20,000 excess deaths for 2022 in Australia One-Year Adverse Outcomes Among US Adults With Post-COVID-19 Condition vs Those Without COVID-19 in a Large Commercial Insurance Database Life expectancy changes since COVID-19

Since ATAGI updated its booster advice there have been lots of questions about why kids aren't able to get another jab.  We discuss the reasoning behind the age limit, as well as some other vaccine-related questions from listeners.  Also, a few controversial COVID topics... from Ivermectin to the US Energy Department's theory on where the virus came from.  References: COVID-19 vaccines for children Effect of Higher-Dose Ivermectin for 6 Days vs Placebo on Time to Sustained Recovery in Outpatients With COVID-19 Lab Leak Most Likely Origin of Covid-19 Pandemic, Energy Department Now Says

Antivirals are an important measure to prevent severe disease in vulnerable people with COVID-19.  But there have been concerns antivirals could lead to rebound infections — the resurgence of viral load following the completion of the medication. So what do the latest studies say? Also, we speak to an expert informing the parliamentary inquiry into long COVID about how to best care for patients.  Guest: Professor Tania Sorrell University of Sydney References:  SARS-CoV-2 rebound with and without antivirals Viral burden rebound in hospitalised patients with COVID-19 receiving oral antivirals in Hong Kong: a population-wide retrospective cohort study Submission—Inquiry into long COVID and repeated COVID infections

An old debate has been reignited after a review declared the effects of masks is uncertain and in need of further investigation.  Meanwhile Sydney scientists have found a receptor that sticks to the coronavirus and pulls it away from lung cells, opening up potential treatment avenues.  But for now, vaccines remain the best protection against severe disease. So when should you get your next booster? We answer some common questions.  References:  Physical interventions to interrupt or reduce the spread of respiratory viruses Yes, masks reduce the risk of spreading COVID, despite a review saying they don't Fibroblast-expressed LRRC15 is a receptor for SARS-CoV-2 spike and controls antiviral and antifibrotic transcriptional programs

Australian adults will be able to get a fifth dose of the COVID-19 vaccine within a fortnight. People aged 18 and over who've not had a COVID vaccine or a positive case in the last six months will also be eligible for another shot.

The majority of Australians have received at least two doses of a COVID vaccine — and they've most likely caught the virus as well.  New research suggests this hybrid immunity offers good protection against severe disease, although the risk of long COVID persists with even mild bouts of infection.  There could soon be a simple model to predict how likely you are to recover well from COVID, or whether you'll go on to develop post-viral symptoms.  Guest:  Professor Jeremy Nicholson Director, Australian National Phenome Centre, Health Futures Institute References: Protective effectiveness of previous SARS-CoV-2 infection and hybrid immunity against the omicron variant and severe disease: a systematic review and meta-regression A patient-centric modeling framework captures recovery from SARS-CoV-2 infection

It has been three years since the World Health Organization declared COVID-19 a global health emergency.  The WHO isn't ready to downgrade the status of the pandemic, but the committee has agreed we're at a 'transition' point.  Meanwhile an outbreak of influenza in mink has highlighted the need for greater animal-human disease surveillance.

Although we didn't begin this year with any lockdowns or border closures, the pandemic hasn't abated. In fact we're off to a worse start than we had in 2022. Australia surpassed 1,000 deaths a whole week earlier than it did last year.  New subvariants are circulating fast. So what's changed? What's the best protection? And could sluggish surveillance be leaving us vulnerable?

What a year 2022 has been for COVID.  We started with a new variant sweeping the world, heavy restrictions and border closures and we end with very few restrictions remaining. We also sadly end with millions not fully vaccinated, and an aged care system that is still battling the virus. So on the last Coronacast of the year, we go down the 2022 rabbit hole and try to make some predictions for 2023.

The number of new weekly COVID cases seems to be slowing, but sadly doesn't seem to be slowing fast enough to be free of the current wave by Christmas. Last year was a strong COVID Christmas, as the Omicron variant took over from Delta bringing thousands and thousands of new cases. This time, the wave will be smaller - but still noticeable. And we break down the big announcements from National Cabinet: PCR testing and the country's COVID strategy in 2023.

There's been a lot of discussion about the origins of COVID, especially on the question of did it come from a lab, did it form naturally - or maybe a mix of both. Well a new book called Dark Winter has tackled this question and has come to the conclusion that we better get better at identifying outbreaks - because sometimes they're intentional. While there's no direct evidence that COVID came from a lab leak, author and Professor Raina MacIntyre argues it is possible and some have been too quick to wave away the possibility.

Protests are breaking out across parts of China in response to the Chinese government zero COVID restrictions. The number of COVID cases has soared in China in recent weeks, rising at a similar rate to what happened in March this year. The outbreak was quickly brought under control, by the use of the Government's severe measures such as forced external quarantine and city wide lockdowns. But with widespread discontent and protests, it may prove harder to keep this outbreak under control. So is this the end of China's COVID zero? References: China Covid: Shocking protests are huge challenge for China's leaders - Stephen McDonell Associations between COVID‐19 and hospitalisation with respiratory and non‐respiratory conditions: a record linkage study

There's hope that the current Omicron sub variant wave will be in decline again just in time for Christmas - but like everything COVID, it's hard to know for sure. Both case loads and hospitalisations due to COVID have continued to increase in the last week. The latest advice from state health authorities say that overseas experience suggests the current wave might pass relatively quickly, though they warn local conditions may mean it's different here. So what do we know about the latest wave? And is it better to have a quick one, or one that lasts for a longer time?

Another week, another big jump in COVID case numbers and rising admissions to hospitals. The next wave is well and truly underway, with the BA4 and BA5 sub variants rapidly being replaced by versions that are even more immune evasive. However, when Omicron turned up last year there were a variety of public health measures in place to try and slow infection rates.  This time though, we've only got vaccination and an optional sense of public duty. So can we slow down the next wave, or is it coming in hard and fast?

Rapid-antigen tests promised so much: a quick, cheap and easy way to tell if you were COVID positive so you could make a decision to help protect yourself, family and community. But in reality, it's far more complicated. The tests were initially hard to come by, expensive for some and the rollout was patchy. And now, add to that the fact that the coronavirus has continued to evolve - making it hard to tell if RATs can even detect COVID. So on this week's Coronacast, should we give a rat about RATs anymore? And why is it important that the tests do as they say?

New sub-variants of Coronavirus are increasingly appearing in Government statistics and clinical breakdowns of the virus' spread. The BQ1 and XBB sub-variants of Omicron have surged overseas, and are also starting to pick up in Australia. It's likely that they'll take over the BA5 subvariant that's been dominant for the past several months. So what could these new variants bring and given they're likely to evade our immune systems, what could it mean for spread and severe disease?

For those keeping count, 2022 hasn't been a great year for animal virus outbreaks into human populations. A new study has suggested that the Omicron variant may have had a reservoir in mice. Also, there are warnings that the East Coast floods may see a rise in people infected with the Japanese encephalitis virus, and parts of Uganda are locked down to prevent an Ebola outbreak from spreading into cities and across borders. So what's going on and how can we make sense of it all?

After all big events, it's important to look back and think about what worked and what didn't. And one of the biggest events lately is COVID, and especially how Australia handled it. A group of researchers and experts have done just that, analyzing everything from the vaccine rollout to virus control measures to looking at what could be improved for the next pandemic. So what did we do well, and what could we have done better?

The first COVID booster that targets the Omicron variant has finally been introduced to Australia's vaccine rollout. The vaccine from Moderna targets the BA.1 Omicron subvariant, but that's no longer the dominant strain. Omicron has continued to evolve since the vaccine was updated, and the dominant strain is now BA5. So how well will the new vaccine work with BA5? And if you've already had 4 doses, why can't you get this one as your 5th?

The decision by National Cabinet to remove mandatory isolation for people testing positive to COVID-19 is seen by many as an "official" end to the pandemic. The period had already been reduced from two weeks to one week to 5 days, but soon it'll be gone entirely. It's one of the final public health controls that remained to try and slow the spread of the virus, and some experts say it'll lead to problems down the road. So for how long should we treat COVID differently?

Russia has been in the news for all the wrong reasons, and here's another concern to add to the list. Scientists are on the alert about the risk of another virus spilling over from animals to humans. This time it's Russian horseshoe bats and a coronavirus from the SARS family. It's known as Khosta 2 and while there has been no known human transmission so far, unlike Khosta 1 scientists say there is the possibility that it could occur. And it's not affected by vaccines for COVID-19. That's on this week's Cororonacast. Also on today's show: * Tracking new COVID variants: we look at 2.75.2

One of the mainstays over the past few years has been daily reporting of COVID cases, hospitalisations, ICUs and deaths.

When COVID hit, there were a whole lot of predictions about how many people would die. Not just of the virus itself, but the knock on effects from reduced care and other diseases. One of the latest attempts at working out the number of excess deaths is recently published and has taken a wide view of the population looking for trends. And while the group found that excess deaths from undiagnosed COVID is likely low in Australia, increased deaths from COVID-caused complications is beginning to show up.

It may not be long before Omicron specific vaccines are available in Australia, like they are elsewhere in the world. Last week the Therapeutic Goods Administration provisionally approved an Omicron variant specific vaccine, but we’re still waiting on ATAGI to recommend its use. So with it likely to be available soon, is it worth waiting for if you’re due for your booster or should you just get what’s available now? Also on today’s show: * Snot and the inner parts of your nose - could this be the key to finally ending the pandemic?

Back at the start of the pandemic, if you tested positive for COVID - or even if you were a contact - you were looking at two weeks of isolation.  These days, that's been downgraded to a week, and contacts are generally free to go about their normal life.  But while COVID is still undeniably a health risk, having masses of people undergoing mandatory isolation takes its own toll.  So should compulsory isolation be shortened or even scrapped altogether? Also on today's show: * Are vaccination requirements still useful?  * Moderna sues Pfizer/BioNTech * Didn't I see Norman out and about without a mask on the other day?

It seems that COVID cases in the latest wave have indeed peaked, and all things across the usual pandemic metrics are improving. It's the best COVID caseload we've had since Omicron came into our lives late last year. So has BA5 burnt itself out or is this just a small respite? And are we due for another variant? Also on today's show: * How is COVID associated with increased risks of neurological and psychiatric conditions? * Is monkeypox getting away from us?