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- 2 days ago23 min
Body hair removal: healthy or not?
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:Trends in body hair removal as depicted through artGetting plucked: the history of hair removal - ABCEffects of pubic hair grooming on women’s sexual health: a systematic review and meta-analysisBare necessity? Public health implications of removing pubic hairEffect of Physical and Chemical Hair Removal Methods on Skin Barrier Function in vitro: Consequences for a Hydrophilic Model PermeantUsing the Hair Removal Laser in the Axillary Region and its Effect on Normal Microbial FloraShaving of axillary hair has only a transient effect on perceived body odor pleasantnessCadaver research leads to prestigious science award - the Science ShowDoes nasal hair (vibrissae) density affect the risk of developing asthma in patients with seasonal rhinitis?6 ways to remove unwanted hair - American Association of DermatologyIf you enjoyed this episode, check these out!Do the benefits of creatine go beyond the gym?Does magnesium work against muscle cramps?Which hair loss treatments actually work?
- 1 weeks ago20 min
Ashwagandha: what's the evidence?
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:An Overview on Ashwagandha: A Rasayana (Rejuvenator) of AyurvedaChemical composition, cytotoxic and pro-inflammatory enzyme inhibitory properties of Withania somnifera (L.) Dunal root extractsChemical Composition, Biological Activity, and Health-Promoting Effects of Withania somnifera for Pharma-Food Industry ApplicationsClinical and Research Information on Drug-Induced Liver InjuryAshwagandha: Is it helpful for stress, anxiety, or sleep?Exploring the efficacy and safety of a novel standardized ashwagandha (Withania somnifera) root extract in adults experiencing high stress and fatigue in a randomized, double-blind, placebo-controlled trialA Randomized, Double-Blind, Placebo-Controlled, Crossover Study Examining the Hormonal and Vitality Effects of Ashwagandha (Withania somnifera) in Aging, Overweight MalesIf you enjoyed this episode, check these out!Vitamin C: can it cure colds and cancer?No-poo: why do we shampoo our hair?Do healthy people need lymphatic treatments?
- 2 weeks ago22 min
How does chronic stress affect the body?
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 does 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:Chronic Stress - ScienceDirectPhysiology, Stress ReactionThe impact of stress on body function: A reviewStressor-Specific Microbiota InterventionStress and the gastrointestinal tractB cells and the stressed brain: emerging evidence of neuroimmune interactions in the context of psychosocial stress and major depressionStress, depression, the immune system, and cancerThe effect of multiple adverse childhood experiences on health: a systematic review and meta-analysis11 healthy ways to handle life’s stressors - American Psychological AssociationStress-related conditions such as adjustment disorder and clinical burnout can be effectively treated with a 12-week cognitive behavioural programme, both when delivered as a face-to-face treatment and when delivered via the internet If you enjoyed this episode, check these out!Why is the internet telling me to lower my cortisol?Are office jobs ruining our bodies?
- 3 weeks ago23 min
Why do some people get motion sickness?
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:Motion SicknessValidating sensory conflict theory and mitigating motion sickness in humans with galvanic vestibular stimulation - NatureAre evolutionary hypotheses for motion sickness "just-so" stories?Three studies of motion sickness susceptibility – Federal Aviation Authority Genetic variants associated with motion sickness point to roles for inner ear development, neurological processes and glucose homeostasisMotion sickness diagnostic criteria: Consensus Document of the Classification Committee of the Bárány Society Survey of motion sickness susceptibility in children and adolescents aged 3 months to 18 years Hopkins History Moments: Neil A. Grauer explains how Hopkins expertise helped prevent seasickness Remedies for motion sickness: What works? - Harvard Health If you enjoyed this episode, check these out!Why is yawning contagious?Do glasses make your eyesight worse?Is emu oil the new snake oil?
- Jun 30, 202621 min
How to drive down your cancer risk
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:Overview of cancer in Australia, 2025 - Australian Institute of Health and WelfareEffects of diets on risks of cancer and the mediating role of metabolites Be physically active – Cancer Council Exercise packs a punch in fending off cancer – the Health Report“You do not get cancer by chance”: Communicating the role of environmental causes in cancer diseases and the risk of a “guilt rhetoric” If you enjoyed this episode, check these out!How worried should you be about microplastics?Is your (artificial) sweet tooth killing you?What's so bad about fine particulate air pollution?
- Jun 23, 202620 min
Should you be taking calcium supplements?
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 optionNorman and Tegan discuss the conflicting evidence on calcium – in particular, could it be good for your bones, but bad for your heart?References:Calcium supplements have 'very little place' in modern medicine - the Health ReportNutrient Reference Values - CalciumEffect of age on calcium absorption in postmenopausal womenBiochemical Variables in Pre- and Postmenopausal Women: Reconciling the Calcium and Estrogen HypothesesCalcium Content of Common Foods - Healthy Bones AustraliaChoosing a calcium supplement: What you should know about taking calcium to boost your nutrientsCalcium Supplements and Risk of Cardiovascular Disease: A Meta-Analysis of Clinical TrialsAssociation Between Calcium Supplementation and the Risk of Cardiovascular Disease and Stroke: A Systematic Review and Meta-AnalysisAssociation Between Calcium Supplementation and Recurrence of Cardiovascular Events in Patients With Cardiovascular Disease: A Population‐Based Cohort StudyCalcium Intake From Diet and Supplements and the Risk of Coronary Artery Calcification and its Progression Among Older Adults: 10‐Year Follow‐up of the Multi‐Ethnic Study of Atherosclerosis (MESA)Oral Calcium Supplements Associate With Serial Coronary Calcification: Insights From Intravascular UltrasoundIf you enjoyed this episode, check these out!Multivitamins: Are they a scam?Don’t Die: Is Bryan Johnson going to live forever?Can peptides keep you young and buff?
- Jun 16, 202619 min
Can tapping calm your nervous system?
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:How ‘tapping’ is dividing opinion in therapy circlesClinical EFT (Emotional Freedom Techniques) Improves Multiple Physiological Markers of HealthNeural changes after Emotional Freedom Techniques treatment for chronic pain sufferersEmotional freedom techniques for treating post traumatic stress disorder: an updated systematic review and meta-analysis Commentary: Emotional freedom techniques for treating post traumatic stress disorder: an updated systematic review and meta-analysisA Randomized Controlled Comparison of Emotional Freedom Technique and Cognitive-Behavioral Therapy to Reduce Adolescent Anxiety: A Pilot StudyFood for Thought: A Randomised Controlled Trial of Emotional Freedom Techniques and Cognitive Behavioural Therapy in the Treatment of Food CravingsThe impact of emotional freedom techniques on anxiety, depression, and anticipatory grief in people with cancer: A meta-analysis and systematic review If you enjoyed this episode, check these out!Can you train yourself to sleep less?Why everything hurts when you turn 30MSG's messy myths and racist tropes
- Jun 9, 202618 min
Is farting a sign your gut microbiome is happy?
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:The Invisible College of Experimental FlatologyExplainer: The chemistry of fartsA widespread hydrogenase supports fermentative growth of gut bacteria in healthy peopleIntestinal gas production by the gut microbiota: A reviewAssociation of the Gut Microbiota With Cognitive Function in Midlife Gut microbiome predicts cognitive function and depressive symptoms in late life The Relationship between Gut Microbiome and Cognition in Older Australians Chart Your Fart - CSIROIf you enjoyed this episode, check these out!Why is yawning contagious?Why are some people right (or left) handed?
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