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What’s That Rash?
PodcastGesundheit und FitnessMedizinEnglisch

What’s That Rash?

von ABC Australia

NeuWhy are people turning to 'natural' birth control?10.11.2026 · 22 Min.
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10. Nov. 2026
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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.

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  1. Why are people turning to 'natural' birth control?

    22 Min.

    Some people are trading traditional birth control for methods like fertility tracking to avoid getting pregnant. How effective are these approaches? And why are people attracted to these "natural" …

    Shownotes

    Some people are trading traditional birth control for methods like fertility tracking to avoid getting pregnant.

    How effective are these approaches? And why are people attracted to these "natural" methods?

    Naomi* and Tegan discuss some of these methods, and how side effects of contraceptives might be contributing to this shift.

    *Dr Naomi Koh Belic is filling in for Norman Swan as he recovers from his knee replacement! Keep an eye out for Dr Naomi's Fact or Fiction on the ABC Science YouTube.

    References:

    If you enjoyed this episode, check these out!

  2. Are our attention spans getting shorter?

    24 Min.

    The world is full of distractions, and our biggest one might be the phone in our hands.Many people feel their attention spans have suffered from endlessly "doomscrolling" online.Norman and Tegan discuss what …

    Shownotes

    The world is full of distractions, and our biggest one might be the phone in our hands.

    Many people feel their attention spans have suffered from endlessly "doomscrolling" online.

    Norman and Tegan discuss what has actually happened to our attention in the age of social media.

    Check out Science Friction: Brain Rot for more on what technology is doing to our brains.

    References:

    If you enjoyed this episode, check these out!

  3. Is 'old person smell' a thing?

    19 Min.

    We've received questions from listeners worried that other people can smell their age.So is "old person smell" a thing? And do you need expensive soap to combat it?Norman and Tegan discuss some of the science …

    Shownotes

    We've received questions from listeners worried that other people can smell their age.

    So is "old person smell" a thing? And do you need expensive soap to combat it?

    Norman and Tegan discuss some of the science underpinning this supposed phenomenon, and where marketing tricks play a part.

    References:

    If you enjoyed this episode, check these out!

  4. How important is a social life?

    24 Min.

    Introvert or extrovert, we've all been told about the importance of social connection to our health.Isolation can have knock-on effects for your brain health – and the health of the rest of your body.Norman and …

    Shownotes

    Introvert or extrovert, we've all been told about the importance of social connection to our health.

    Isolation can have knock-on effects for your brain health – and the health of the rest of your body.

    Norman and Tegan unpack how many friends the average person "needs" and what happens when you're alone but not lonely.

    References:

    If you enjoyed this episode, check these out!

  5. Should you exercise on an empty stomach?

    17 Min.

    You might've heard you'll burn more fat if you exercise in the morning before, or in lieu of breakfast.There is some research to back that claim up, but the science on fasted exercise isn’t clear cut.Norman and …

    Shownotes

    You might've heard you'll burn more fat if you exercise in the morning before, or in lieu of breakfast.

    There is some research to back that claim up, but the science on fasted exercise isn’t clear cut.

    Norman and Tegan work through the evidence on exercising on an empty stomach, and what you can do to maximise your workouts.

    References:

    If you enjoyed this episode, check these out!

  6. Does hypnotherapy work?

    23 Min.

    Sit back and relax. Close your eyes. Imagine you're sitting on a calm beach. Now, do you feel more open to suggestion?Hypnotherapy has been around for centuries, and you might've heard about it being used for …

    Shownotes

    Sit back and relax. Close your eyes. Imagine you're sitting on a calm beach. Now, do you feel more open to suggestion?

    Hypnotherapy has been around for centuries, and you might've heard about it being used for everything from PTSD to addiction and even IBS.

    Norman and Tegan guide us through the evidence for using hypnosis in a therapeutic setting, and whether there are any downsides.

    References:

    If you enjoyed this episode, check these out!

  7. NMN, NAD+ and other acronyms of anti-aging

    16 Min.

    As we age, levels of a vital molecule called nicotinamide adenine dinucleotide (NAD+) decline. Could reversing this be the key to eternal youth?There’s huge interest in NAD-boosting supplements like …

    Shownotes

    As we age, levels of a vital molecule called nicotinamide adenine dinucleotide (NAD+) decline. Could reversing this be the key to eternal youth?

    There’s huge interest in NAD-boosting supplements like nicotinamide mononucleotide (NMN). But is there good evidence that they can help us live longer, healthier?

    Norman and Tegan unpack how NAD+ became the focus of anti-aging proponents.

    This episode first aired on November 4, 2024.

    References:

  8. How bad is shift work for your health?

    22 Min.

    Shift workers make a lot of sacrifices to keep the world running. What are they sacrificing in terms of their own health?There are harms associated with working at all hours against your body clock.Norman and …

    Shownotes

    Shift workers make a lot of sacrifices to keep the world running. What are they sacrificing in terms of their own health?

    There are harms associated with working at all hours against your body clock.

    Norman and Tegan work through what those are, and what you can do to protect against them.

    References:

    If you enjoyed this episode, check these out!

  9. Eat the rainbow: what can food colour tell us?

    22 Min.

    When you're done with your weekly grocery shop, how colourful is your trolley?We know eating lots of fruits and vegetables is good for you, but colour could matter.Norman and Tegan discuss what gives fruit and …

    Shownotes

    When you're done with your weekly grocery shop, how colourful is your trolley?

    We know eating lots of fruits and vegetables is good for you, but colour could matter.

    Norman and Tegan discuss what gives fruit and veggies their hue and whether it's important when it comes to healthy eating.

    References:

    If you enjoyed this episode, check these out!

  10. Mouthwash: good or bad for you?

    23 Min.

    How much time does your oral hygiene routine take? You brush, floss, interdent, maybe even use a tongue scraper.Is using a mouthwash going to give you any additional benefit? Or could you be doing some …

    Shownotes

    How much time does your oral hygiene routine take? You brush, floss, interdent, maybe even use a tongue scraper.

    Is using a mouthwash going to give you any additional benefit? Or could you be doing some harm?

    Norman and Tegan answer questions about the effectiveness of mouthwash, what it does to your oral microbiome and why there might be a link to blood pressure.

    References:

    If you enjoyed this episode, check these out!

  11. Why wear a continuous glucose monitor?

    22 Min.

    Continuous glucose monitors, or CGMs, have transformed how people with diabetes manage their blood sugar.But in wellness circles, more and more people without diabetes are being encouraged to try these …

    Shownotes

    Continuous glucose monitors, or CGMs, have transformed how people with diabetes manage their blood sugar.

    But in wellness circles, more and more people without diabetes are being encouraged to try these devices.

    Norman and Tegan get to the bottom of what these devices can actually tell you, and the potential harms.

    References:

    If you enjoyed this episode, check these out!

  12. Are rest days from exercise necessary?

    21 Min.

    Not many people would argue that rest isn’t important, but how would you define a rest day?For an elite athlete a rest day could be going for a long walk. For your average person it could mean sitting on the …

    Shownotes

    Not many people would argue that rest isn’t important, but how would you define a rest day?

    For an elite athlete a rest day could be going for a long walk. For your average person it could mean sitting on the couch.

    Norman and Tegan ask – why is rest important, and do you need it to make progress in the gym?

    References:

    If you enjoyed this episode, check these out!

  13. What has your nose got to do with sleep?

    18 Min.

    Have you ever spritzed your pillow with lavender and wondered, is this actually doing anything?There are some surprising ways that smells can affect sleep, and it might have something to do with how our brains …

    Shownotes

    Have you ever spritzed your pillow with lavender and wondered, is this actually doing anything?

    There are some surprising ways that smells can affect sleep, and it might have something to do with how our brains work.

    Norman and Tegan discuss how smells, good and bad, could affect your nightly snooze.

    References:

    If you enjoyed this episode, check these out!

  14. Why do we cry?

    20 Min.

    Do you feel better after a good cry, or do you feel worse than ever?There can be a lot to cry about, good or bad: a break-up, a milestone, a tragedy, a sappy movie.Norman and Tegan discuss why we evolved to …

    Shownotes

    Do you feel better after a good cry, or do you feel worse than ever?

    There can be a lot to cry about, good or bad: a break-up, a milestone, a tragedy, a sappy movie.

    Norman and Tegan discuss why we evolved to cry, and the purpose it serves as we get older.

    References:

    If you enjoyed this episode, check these out!

  15. What is ultra-processed food?

    24 Min.

    You might be hearing a lot about ultra-processed foods, or UPFs, and how we should all be avoiding them.But you might be struggling with figuring out what exactly IS an ultra-processed food. Sweetened drinks …

    Shownotes

    You might be hearing a lot about ultra-processed foods, or UPFs, and how we should all be avoiding them.

    But you might be struggling with figuring out what exactly IS an ultra-processed food. Sweetened drinks, sure. What about bread? Yoghurt?

    Norman and Tegan unpack why it isn’t a simple question, and where the evidence stands on the health consequences.

    *A previous version of this episode may have implied that the Food Standards Australia New Zealand (FSANZ) board is comprised of current food industry representatives that are directly involved in setting food policy. This was edited on 12/08/2026.

    References:

    If you enjoyed this episode, check these out!

  16. Body hair removal: healthy or not?

    23 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  17. Ashwagandha: what's the evidence?

    20 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  18. How does chronic stress affect the body?

    22 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  19. Why do some people get motion sickness?

    23 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  20. How to drive down your cancer risk

    21 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  21. Should you be taking calcium supplements?

    20 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  22. Can tapping calm your nervous system?

    19 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  23. Is farting a sign your gut microbiome is happy?

    18 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  24. Still coughing — are you still infectious?

    18 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  25. Can your joints predict the weather?

    19 Min.

    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 …

    Shownotes

    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:

    If you enjoyed this episode, check these out!

  26. Should you get a full-body MRI?

    22 Min.

    It’s good to be on top of your health – but how far would you go to ensure you’re staying healthy?Ads have popped up for full-body MRIs, promising to catch things from cancer to aneurysms.Norman and Tegan scan …

    Shownotes

    It’s good to be on top of your health – but how far would you go to ensure you’re staying healthy?

    Ads have popped up for full-body MRIs, promising to catch things from cancer to aneurysms.

    Norman and Tegan scan through the potential benefits and risks of looking inside seemingly healthy bodies.

    References:

    If you enjoyed this episode, check these out!

  27. Deep dive on progressive exercise

    22 Min.

    You might've heard the qualifier that exercise is good for you – but you need to be progressing that exercise over time.Running further, lifting heavier, exercising for longer. How important is it to up the …

    Shownotes

    You might've heard the qualifier that exercise is good for you – but you need to be progressing that exercise over time.

    Running further, lifting heavier, exercising for longer. How important is it to up the stakes?

    Norman and Tegan flex their muscles on progressive training and its benefits.

    References:

    If you enjoyed this episode, check these out!

  28. Hantavirus: what we know about the cruise ship outbreak

    13 Min.

    A cruise ship at the centre of a virus outbreak — sound familiar?Passengers and crew are beginning to disembark the MV Hondius after several cases of hantavirus sent them into quarantine. The virus is usually …

    Shownotes

    A cruise ship at the centre of a virus outbreak — sound familiar?

    Passengers and crew are beginning to disembark the MV Hondius after several cases of hantavirus sent them into quarantine.

    The virus is usually caught through contact with infected rodent urine, droppings or saliva. Transmission between humans is rare.

    Norman and Tegan answer common questions about the hantavirus, and how it compares to the handling of COVID-19.

  29. Why is yawning contagious?

    17 Min.

    It’s easy to catch a yawn – you might even yawn while you’re reading this.It’s not just humans that yawn, but all kinds of verterbrates, even fish! But contagious yawning is rarer.Norman and Tegan unpack why we …

    Shownotes

    It’s easy to catch a yawn – you might even yawn while you’re reading this.

    It’s not just humans that yawn, but all kinds of verterbrates, even fish! But contagious yawning is rarer.

    Norman and Tegan unpack why we yawn in this live recording at the World Science Festival Brisbane.

    References:

    If you enjoyed this episode, check these out!

  30. Tonsils, appendix, gallbladder: is anything actually useless?

    20 Min.

    You might know them as "vestigial" organs, but we no longer overlook organs that aren’t vital for life.While they can be removed, your tonsils, appendix and gallbladder play important roles in the body.Norman …

    Shownotes

    You might know them as "vestigial" organs, but we no longer overlook organs that aren’t vital for life.

    While they can be removed, your tonsils, appendix and gallbladder play important roles in the body.

    Norman and Tegan define what "vestigial" actually means, and how our bodies adapt to losing an organ.

    References:

    If you enjoyed this episode, check these out!

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