ZOE Science & Nutrition

Fix your sleep with the Royal Marine's sleep consultant Dr. Sophie Bostock

93 snips
Sep 25, 2025
In this insightful discussion, Dr. Sophie Bostock, a health psychologist and sleep scientist, shares her expertise on transforming sleep habits. She debunks myths about blue light and alcohol's effects on sleep and delves into how sleep deprivation impacts willpower and cognition. Sophie introduces Cognitive Behavioral Therapy for Insomnia (CBT-I) as a more effective alternative to sleeping pills. She also emphasizes the benefits of daily habits and simple techniques to enhance sleep quality, from morning light exposure to managing screen time.
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INSIGHT

Sleep Loss Triggers A Threat State

  • Sleep loss increases threat perception and ramps up the stress response, raising adrenaline, cortisol, blood pressure, and blood glucose.
  • Chronic dysregulation then raises risks for inflammation, hypertension, diabetes, and impaired immune function.
INSIGHT

Sleep Is Essential For Cognitive Processing

  • Sleep supports memory consolidation and synaptic pruning, which underpins learning, focus, and reaction time.
  • Sleep deprivation causes brain fog, slower responses, and higher accident risk.
INSIGHT

Short Sleep Raises Risk, Not Always Certainty

  • Large population studies link short sleep to many diseases, but they mainly show increased risk rather than certainty.
  • Absolute risk increases can be small even when relative risk rises substantially.
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