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Unhealthy Curiosity

Unhealthy Curiosity

By: Dr Sarah Holper
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Neurologist, author and science communicator Dr Sarah Holper explores the fascinating science behind the human body's strangest features, flaws and quirks. Using medicine, history and curious case studies, she explains why we work the way we do, one wonderfully weird question at a time. From sweating blood to voice transplants, each episode explores a curious corner of medicine and biology. Learn more at drsarahholper.com.Dr Sarah Holper Biological Sciences Science
Episodes
  • How to Turn Your Skin Any Colour of the Rainbow

    How to Turn Your Skin Any Colour of the Rainbow
    Sep 8 2026

    This episode explores how drugs, foods, poisons, cosmetics and assorted bodily malfunctions can produce human skin in all 7 colours of the rainbow (and how Isaac Newton is to blame for us thinking a rainbow has 7 colours in the first place).
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    16 mins
  • Why Muscles Cramp (And What to Do About It)

    Why Muscles Cramp (And What to Do About It)
    Aug 27 2026

    Dehydration. Too much water. Too much exercise. Not enough exercise. Apparently almost anything can cause a muscle cramp. This episode explores why your muscles occasionally seize without permission, what your nervous system has to do with it, and whether magnesium actually helps.
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    15 mins
  • How Does Your Tongue Know What Things Taste Like?

    How Does Your Tongue Know What Things Taste Like?
    Aug 12 2026

    How can the hunk of meat in your mouth ‘know’ what the food smeared over it tastes like? This episode explores what actually makes something sweet, sour, salty, bitter or umami, and what maggot-infested cheese, antifreeze and a poisoned Roman emperor have to do with it.
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    20 mins
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