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**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.

Latest Episodes:

Should you go organic if you're worried about pesticides? Jun 11, 2025

Show notes

Organic fruits and vegetables are one thing, but the label is popping up on packaged foods too.

Are they healthier for us because they’re certified organic? How much harm are pesticides doing to our health?

Norman and Tegan dig into organic farming to find out whether they’re worth the extra price.

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What we do (and don't) know about tinnitus Jun 04, 2025

Show notes

What is silence, anyway? Well if you’ve got tinnitus silence can feel like a distant dream.

There are many causes of the ringing or buzzing that many people hear despite there being no external sound.

Norman and Tegan discuss some of the treatments – current and in the works – that could one day bring some peace and quiet.

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Should you train cardio and strength on the same day? May 28, 2025

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If you're a keen gym-goer you might've heard conflicting advice about optimising your workout.

Some people claim that doing both cardio (getting your heart pumping) and strength (getting those muscles pumping) on the same day might cancel out the benefits.

Norman and Tegan unpack what concurrent training is, and what the evidence tells us about its effects.

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Why do some people run hot, while others run cold? May 21, 2025

Show notes

Are you constantly getting scolded for pressing your cold feet against your partner in bed? Or told your hands are icy cold?

It’s well known that some people run cold and others run hot. But why does this happen, and does it say anything about your health?

Norman and Tegan unpack the physiology and get into some of the reasons we experience temperature differently.

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Can consuming dairy really give you acne? May 14, 2025

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You might've heard a friend complaining about their latest break-out and swearing off dairy products as a result. Or that friend might be you.

It’s a common complaint, but does it have any scientific merit?

Norman and Tegan explore whether consuming dairy can cause acne, and if so, how a glass of milk might lead to pimples.

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Cracking your knuckles: good, bad or just annoying? May 07, 2025

Show notes

You might’ve been told by parents, teachers, colleagues, friends of friends to stop cracking your knuckles because it will give you arthritis.

There’s a surprising amount of science going on when you crack a joint, and it suggests there’s very little risk of harming your bones.

But as Norman and Tegan explain, there is one major risk – you could irritate everybody around you.

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Can tattoos increase your risk of cancer? Apr 30, 2025

Show notes

When weighing up the health risks of getting a tattoo, most people are concerned about the risk infection.

But recently the ingredients in tattoo ink have come under the microscope, with some being identified as potential carcinogens.

Norman and Tegan take a look at the many substances used to create permanent art, and whether they carry any real harm to humans.

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Why the carnivore diet is so risky Apr 23, 2025

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The carnivore diet asks people to eat entirely animal-based, and the most extreme followers restrict themselves to only meat.

Many carnivores claims they feel great — better than they ever have. They have more energy and lose weight.

Norman and Tegan tuck into the reasons why carnivores feel better in the short-term, and the dangers they're inviting in the long-term.

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The perimenopause diaries from Ladies, We Need to Talk Apr 18, 2025

Show notes

Hot flashes. Night sweats. Aching joints. Sore boobs. Welcome to your body in perimenopause!

In episode one of this four-part series, Yumi Stynes speaks to women in the thick of perimenopause and battling physical symptoms.

She also sits down with Dr Susan Davis, endocrinologist and world-leading expert on sex hormones and ageing to learn the best treatments for bothersome symptoms and how look after yourself in this stage of life. No sweat!

Essential listening if you're going through perimenopause right now, or for those wanting to know what's over the hormonal horizon.

Can you train yourself to pee less? Apr 16, 2025

Show notes

Do you find yourself complaining that you've got a small bladder, as you run to the toilet for the third time in an hour?

There are many reasons a person might pee more than others, including some scary medical conditions.

But as Norman and Tegan explain, in most cases your bladder is just deconditioned and you need to get your urinary tract into shape.

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