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PODCAST

What"s That Rash?

Get answers to the health questions everyone"s asking. Our experts give you the information you need to feel good and make the best decisions for your brain and body.

health & fitness medicine

All Episodes

0:15:00

There's a lot of fog around brain fog

What"s That Rash? ·

2025/01/28

Unfortunately many more people have heard about brain fog because of the pandemic and long COVID.But the symptom was first mentioned centuries ago, and has been associated with dozens of conditions.Norman and Tegan try to define brain fog, and explain why it can be difficult to treat.References:What is brain fog? - BMJ neuropsychiatrySubjective brain fog: a four-dimensional characterization in 25,796 participantsComprehensive Clinical Characterisation of Brain Fog in Adults

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0:19:00

Why is everyone suddenly talking about seed oils?

What"s That Rash? ·

2025/01/21

It can be hard to keep up with food fads and diet trends (and spoiler: you don’t need to).But an intriguing assumption that has gained traction recently is that seed oils – think canola, sunflower, grapeseed – are terrible for you.Norman and Tegan unpack how that assumption has spread, and whether there’s any solid evidence to back it up.References:Biomarkers of Dietary Omega-6 Fatty Acids and Incident Cardiovascular Disease and MortalitySerum n-6 polyunsaturated fatty acids and

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0:17:00

Can you get away with skipping your daily shower?

What"s That Rash? ·

2025/01/14

January is an especially sweaty time in Australia, so maybe park this life change until the weather cools down…But is it necessary to bathe every day?As we learn more about the microbiome on our skin, more and more people are questioning their hygiene routine.Norman and Tegan sniff out the evidence for and against regular washing. References:A natural history of hygieneThe Cutaneous Microbiome and Aspects of Skin Antimicrobial Defense System Resist Acute Treatment with Topical Skin

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0:18:00

Should you base your diet on your blood type?

What"s That Rash? ·

2025/01/07

You might've heard of the blood type diet popularised in the 90s off the back of a best-selling book.It’s based on the theory that blood types emerged at different times in history, when our ancestors had very different diets.So does that mean certain foods are better for an A-, an AB+ or even an O-?As Norman and Tegan explain, it’s a complicated story.References:Blood type diets lack supporting evidence: a systematic reviewBlood Type Is Not Associated with Changes in

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0:19:00

The four steps you need to form a habit

What"s That Rash? ·

2024/12/31

There are MANY books out there on habit formation. Are they all saying the same thing?Some habits are more complicated than others. Some habits require us to untangle one automatic set of behaviours and replace them with another.It can be a long process — much longer than the 21 days that's often promised. Norman and Tegan tell us how to form a new habit, in far less than 300 pages, so you can get started. ReferencesNeurobiology of habit formationHow the brain controls our habits

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0:14:00

Is that glass of red wine over Christmas dinner good...

What"s That Rash? ·

2024/12/24

'Tis the season to indulge. As you sit down with family and friends, an age-old debate might arise: does drinking a single glass of red wine make you healthier?In this episode first published May 1, 2024, Norman and Tegan try to find out the answer once and for all. References: The French paradox: Lessons for other countriesModerate Wine Consumption and Health: A Narrative ReviewHealth Effects of Red Wine Consumption: A Narrative Review of an Issue That Still Deserves Debate

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0:20:00

Infrared, ultraviolet and LED therapy – can lights...

What"s That Rash? ·

2024/12/17

You might have seen those robot-looking red light masks being sold for skincare purposes. You might have thought — looks technological, but does it work?It's not just red light. There are a spectrum of health claims from infrared to ultraviolet.Norman and Tegan go through the rainbow to assess where there's evidence, and where there's not. References:Near Infrared Photoimmunotherapy: A Review of Recent Progress and Their Target Molecules for Cancer TherapyEffect of NASA

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0:18:00

What's the lowdown on energy drinks?

What"s That Rash? ·

2024/12/10

Life can be exhausting, and while a nap might be in order, it’s rare you’ve got time to take one.Caffeine can come to the rescue, but you might not be a fan of tea of coffee. Energy drinks are an alternative, but are they any good for you?Norman and Tegan explain what modern energy drinks contain, and what the ingredients do.What's That Rash? is on YouTube! Subscribe to ABC Science to watch the podcast. References:Prevalence and Amounts of Common Ingredients Found in Energy Drinks

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0:19:00

Is sitting the new smoking?

What"s That Rash? ·

2024/12/03

Many people live sedentary lives, sitting in an office all day then coming home to sit on the couch all night.What are the health harms of too much sitting? And do they compare to smoking as some headlines claim?Norman and Tegan settle in to explain the risks, and what you can do to avoid them.What's That Rash? is on YouTube! Subscribe to ABC Science to watch the podcast. References:Evaluating the Evidence on Sitting, Smoking, and Health: Is Sitting Really the New Smoking?Trends in

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0:19:00

Can collagen supplements keep your skin supple?

What"s That Rash? ·

2024/11/26

We live in a world full of influencers pushing us products promising to keep us looking bouncy and youthful forever. Collagen is a hugely important protein that does play a role in plumping up our skin — as well as supporting muscles, bones and connective tissues. Norman and Tegan find out how effective collagen supplements are in skin care, and which kind you should look out for if you want to see results. What's That Rash? is on YouTube! Subscribe to ABC Science to watch the

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0:19:00

Are mobile phones giving us cancer?

What"s That Rash? ·

2024/11/19

These days, our mobile phones are rarely far away. Whether it’s in your hand, your pocket, or under your pillow at night.Mobiles do emit radiation in order to connect to phone towers, which enables us to stay in contact with people and the internet.But is that radiation doing us harm?Norman and Tegan talk through the facts – what we do know, don’t know and suspect about our tech companions.What's That Rash? is coming to YouTube! Keep an eye out for the video version of this episode

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0:14:00

Should you be avoiding nightshades?

What"s That Rash? ·

2024/11/12

Why are people with arthritis being told to stop eating potatoes, tomatoes and egg plants?Vegetables in the nightshade family have been under scrutiny for decades, but the fad of cutting them out of our diets has seen a recent resurgence.Norman and Tegan investigate where all this shade comes from, and whether there's any evidence to support it.References:Deadly Nightshade: A Botanical BiographyFlavonoids, alkaloids and saponins: are these plant-derived compounds an alternative to

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0:18:00

Is NAD+ a miracle anti-ageing supplement?

What"s That Rash? ·

2024/11/05

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 ageingNAD+ in Brain Aging and Neurodegenerative DisordersWhat is

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0:18:00

How medical mysteries fed monster myths

What"s That Rash? ·

2024/10/29

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

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0:18:00

Can't stop sneezing? What to do when hay fever hits

What"s That Rash? ·

2024/10/22

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 ReviewO Rose thou art sick… history of allergic rhinitisI’m

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0:17:00

What on earth is grounding?!

What"s That Rash? ·

2024/10/15

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 InfantsAssociations between Nature Exposure

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0:19:00

MSG's messy myths and racist tropes

What"s That Rash? ·

2024/10/08

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 ZealandA review of the alleged health hazards of monosodium glutamateMonosodium

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0:19:00

Why is the internet telling me to lower my cortisol?

What"s That Rash? ·

2024/10/01

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. ReferencesForgotten episodes of the birth of cortisoneThe effects of exercise intensity on the cortisol response to a subsequent

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0:19:00

Is melatonin the answer to a good night's sleep?

What"s That Rash? ·

2024/09/24

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. ReferencesWhat 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

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0:18:00

What it takes to avoid iron deficiency

What"s That Rash? ·

2024/09/17

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.ReferencesA Review of Nutrients and Compounds, Which Promote or Inhibit Intestinal Iron AbsorptionIntermittent iron supplementation for reducing anaemia and its associated impairments in adolescent and adult

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