What's That Rash? - TopPodcast.com

Latest Episodes:

Why you don't need to avoid seed oils Jan 07, 2026

Show notes

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:

Should you opt for aluminium-free deodorant? Dec 31, 2025

Show notes

We haven’t always suppressed our sweat or our natural body odour, but in many cultures now it’s expected we’ll all try to smell our best.

You might be seeing more ads for ‘natural’ deodorants that promise to keep you fresh without any harmful ingredients.

Norman and Tegan talk through those ingredients, and whether they carry any risks.

This episode first aired on March 19, 2025.

References:

Why do some people pee more often? Dec 24, 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.

This episode first aired on April 15, 2025.

References:

Sunscreen spectacular: UV protection, SPF drama, endocrine disruptors Dec 17, 2025

Show notes

There have been many discussions this year about sunscreen, its effectiveness and its ingredients.

While there are some unknowns, what we’re sure of is sunscreen’s ability to protect us from the sun’s ageing and cancer-causing rays.

Norman and Tegan slip, slop, slap some questions about sunscreen: SPF scandal, endocrine disruptors and vitamin D concerns.

References:

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Do the benefits of creatine go beyond the gym? Dec 10, 2025

Show notes

Creatine is getting a lot of hype lately, at least according to our listeners.

It’s being pushed for everything from menopause to dementia for its supposed energy-boosting, brain-boosting benefits.

Norman and Tegan explore what is really going on with creatine outside of its muscle-building potential.

References:

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Why do we dream? Dec 03, 2025

Show notes

Whether or not we remember our dreams, we all have them. But the answer to why we dream is complicated.

There's a lot going on in our brains during sleep, especially during the rapid eye movement (REM) phase when most dreams go down.

Norman and Tegan talk through the purpose of dreams, how time warps as we snooze and whether there are any downsides to these nightly hallucinations.

References:

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What's the best time of day to exercise? Nov 26, 2025

Show notes

When you’ve got a busy schedule, it’s important to just exercise when you can. But if you have the luxury of choice, is there an optimal one?

You might’ve even heard that exercising at certain times of day can lead to harm.

Norman and Tegan run through the evidence around heart attacks, workouts and what happens when you’re a morning or a night person.

References:

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Should you aim for an alkaline lifestyle? Nov 19, 2025

Show notes

Humans are slightly alkaline – your blood should be a pH between 7.35 to 7.45. Anything outside that range can be life-threatening.

So why are you being told to follow an alkaline diet? Proponents of the diet claim it can tackle everything from osteoporosis to cancer.

Norman and Tegan do a litmus test on the alkaline-acid balance and whether it’s a driver of chronic disease.

References:

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Anything wrong with falling asleep in front of the TV? Nov 12, 2025

Show notes

You’re settling into the couch after a long day, ready to relax with your favourite show … next thing you know, you’re asleep.

What is it about the TV that puts people to sleep, and what can you do to avoid dozing off?

Norman and Tegan explore comfort watching, binge-watching and blue light exposure.

References:

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Difference between dry needling and acupuncture? Nov 05, 2025

Show notes

If you've seen a physiotherapist, you might’ve undergone needling with the promise it will reduce your pain.

Did you receive dry needling or acupuncture? How can you tell the difference between the two?

Norman and Tegan poke through the evidence to find out how effective these techniques can be.

References:

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