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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:

Body hair removal: healthy or not? Jul 29, 2026

Show notes

The modification and removal of body hair has been going on for centuries, but our reasons for it have evolved.

Some believe it’s more hygienic to remove, others argue it’s against our nature to be so hairless.

Norman and Tegan trim the evidence on body hair: leg, armpit, pubic and even inside your nose.

References:

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Ashwagandha: what's the evidence? Jul 22, 2026

Show notes

Ashwagandha supplements are rising in popularity, but the herb has been used for hundreds of years in Ayurvedic medicine.

The supposed benefits are broad – from stress to sleep, athletic performance and boosting testosterone.

Norman and Tegan explore where the evidence stands, and uncertainties about potential risks.

References:

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How does chronic stress affect the body? Jul 15, 2026

Show notes

When you're going through a stressful time it can have knock-on effects on your routine.

Sleep, diet, exercise routines can be thrown out of whack. And when that stress goes for weeks or months, it can have a serious impact.

Norman and Tegan unpack the various forms of chronic stress, like burnout, and how they can disrupt your health.

References:

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Why do some people get motion sickness? Jul 08, 2026

Show notes

Sea sickness, car sickness, space sickness – when it comes down to it, it’s all the same.

But not everybody suffers the same. Some people are even lucky enough to grow out of motion sickness.

Norman and Tegan talk about what’s going on when the world goes topsy-turvy, and what you can do about it.

References:

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How to drive down your cancer risk Jul 01, 2026

Show notes

Lately there have been lots of scary headlines about cancer rates rising in younger adults.

What can you do to drive down your cancer risk?

Norman and Tegan offer some practical tips, and discuss what's in your control versus what isn't.

References:

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Should you be taking calcium supplements? Jun 24, 2026

Show notes

Our calcium needs can increase as we age, especially for women going through menopause.

Most Australians aren’t getting enough calcium from their diet, so are supplements a good option

Norman and Tegan discuss the conflicting evidence on calcium – in particular, could it be good for your bones, but bad for your heart?

References:

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Can tapping calm your nervous system? Jun 17, 2026

Show notes

There's a scene in the Devil Wears Prada 2 where a character is so stressed she starts "tapping" to calm herself down.

What is this self-soothing technique, and should you try it out?

Norman and Tegan talk through what Emotional Freedom Techniques, or tapping is and whether there's any evidence it lowers anxiety.

References:

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Is farting a sign your gut microbiome is happy? Jun 10, 2026

Show notes

Everyone wants a healthy gut, and your microbiome plays a big role in keeping you well.

So how do you know your microbiome is in top shape? Are there stinky signs that things are going right, or wrong?

Norman and Tegan breeze through the research in this live recording at the World Science Festival Brisbane.

References:

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Still coughing — are you still infectious? Jun 03, 2026

Show notes

Cold season is upon us, so it’s no wonder you’re side-eyeing that person coughing on the bus.

But does a cough mean someone is still infectious? How do you know you’re in the clear to go back to work?

Norman and Tegan talk through the science, and also how attitudes have changed since the COVID-19 pandemic.

References:

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Can your joints predict the weather? May 27, 2026

Show notes

Have you heard the phrases, "aches and pain, coming rains" or about "ill health due to evil winds"?

Many people believe they can feel a change in weather coming on because pain flares in their joints.

Norman and Tegan unpack what could be going on, and whether it's backed by scientific evidence.

References:

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