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What's That Rash?

ABC Australia
What's That Rash?
Latest episode

696 episodes

  • What's That Rash?

    Should you exercise on an empty stomach?

    13/10/2026 | 17 mins.
    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:
    Effects of fasted vs fed-state exercise on performance and post-exercise metabolism: A systematic review and meta-analysis
    Effect of Overnight Fasted Exercise on Weight Loss and Body Composition: A Systematic Review and Meta-Analysis
    Interval training in the fed or fasted state improves body composition and muscle oxidative capacity in overweight women
    Effects of exercise before or after meal ingestion on fat balance and postprandial metabolism in overweight men
    Effects of time-restricted eating with exercise on body composition in adults: a systematic review and meta-analysis
    Exercising in the Fasted State Reduced 24-Hour Energy Intake in Active Male Adults
    Appetite, energy intake and resting metabolic responses to 60 min treadmill running performed in a fasted versus a postprandial state
    Fasting Before Evening Exercise Reduces Net Energy Intake and Increases Fat Oxidation, but Impairs Performance in Healthy Males and Females
    Fasted cardio is an attempt to burn stored fat
    If you enjoyed this episode, check these out!
    What's the best time of day to exercise?
    What are the health benefits of coffee?
    Do glasses make your eyesight worse?
  • What's That Rash?

    Does hypnotherapy work?

    06/10/2026 | 23 mins.
    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:
    Brain Activity and Functional Connectivity Associated with Hypnosis
    Not everyone can be hypnotized - and researchers are one step closer to understanding why
    Functional Brain Basis of Hypnotizability
    A Systematic Review of Hypnosis for Clinical Pain Relief
    The effectiveness of hypnosis for pain relief: A systematic review and meta-analysis of 85 controlled experimental trials
    Hypnosis as a non-pharmacological intervention for invasive medical procedures - A systematic review and meta-analytic update
    Gut-directed hypnotherapy for IBS: what is it and what are the options?
    Gut-Directed Hypnotherapy for Irritable Bowel Syndrome: A Systematic Review and Meta-Analysis
    Does hypnotherapy help people who are trying to stop smoking? - Cochrane Review
    Effectiveness of hypnosis in adults with posttraumatic stress disorder (PTSD)
    A Meta-Analysis of Hypnotherapeutic Techniques in the Treatment of PTSD Symptoms
    Hypnotherapy in the Treatment of Chronic Combat-Related PTSD Patients Suffering From Insomnia: A Randomized, Zolpidem-Controlled Clinical Trial
    Ericksonian hypnotherapy versus cognitive behavioral therapy for post-traumatic stress disorder
    The Prefrontal Cortex and Suggestion: Hypnosis vs. Placebo Effects
    If you enjoyed this episode, check these out!
    What's the deal with night terrors?
    Can tapping calm your nervous system?
    Why do we dream?
  • What's That Rash?

    NMN, NAD+ and other acronyms of anti-aging

    29/09/2026 | 16 mins.
    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:
    NAD+ metabolism and its roles in cellular processes during ageing
    NAD+ in Brain Aging and Neurodegenerative Disorders
    What is really known about the effects of nicotinamide riboside supplementation in humans
    Dietary Supplementation With NAD+-Boosting Compounds in Humans: Current Knowledge and Future Directions
    The use of a systems approach to increase NAD+ in human participants
    Specific ablation of Nampt in adult neural stem cells recapitulates their functional defects during aging
  • What's That Rash?

    How bad is shift work for your health?

    22/09/2026 | 22 mins.
    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:
    5 long-term health effects of shift work
    Shift work can harm sleep and health: What helps?
    Coping with shift work
    Shift work and health outcomes: an umbrella review of systematic reviews and meta-analyses of epidemiological studies
    Shift work and long work hours and their association with chronic health conditions: A systematic review of systematic reviews with meta-analyses
    Relationship between long-term shift work; night work; sleep deficiency and stroke: A systematic review and meta-analysis
    Shifting Rhythms: A Systematic Review Exploring the Multifaceted Effects of Shift Work and Circadian Disruption on Employee Cardiovascular Health
    Exercise interventions for sleep and cognitive dysfunction in shift workers: a systematic review of randomized trials 
    If you enjoyed this episode, check these out!
    What is the perfect nap duration?
    Chronotypes: early birds vs night owls
    Why do some people pee more often?
  • What's That Rash?

    Eat the rainbow: what can food colour tell us?

    15/09/2026 | 22 mins.
    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:
    Phytonutrients: Paint your plate with the colours of the rainbow
    Clinical Evidence of the Benefits of Phytonutrients in Human Healthcare
    Eat a Rainbow – Nutrition Australia
    Phytochemicals: Principles and Practice
    What’s the Difference Between Sweet Potatoes and Potatoes?
    Role of Phytonutrients in the Prevention and Treatment of Chronic Diseases: A Concrete Review
    Major phytochemicals, their sources, active sites, and the related health benefits
    Effect of Fruit and Vegetable Consumption on Human Health: An Update of the Literature
    Adding variety to your diet lowers disease risk. But what does variety mean?
    Which Colour of Bell Pepper Has Most Nutrients? 
    If you enjoyed this episode, check these out!
    Should you be eating more fruit?
    Why Norman won't shut up about the Mediterranean diet
    What are the health benefits of coffee?
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