Feel Better, Live More with Dr Rangan Chatterjee

Why Getting More Light Will Transform Your Health with Linda Geddes #77

Oct 9, 2019
In this conversation, Linda Geddes, an award-winning journalist and author of 'Chasing the Sun', discusses the profound impact of sunlight on our health. She reveals how our biology is synchronized with natural light and delves into the consequences of artificial lighting and urban living. Geddes shares her personal experiment of reducing night-time light exposure, offering practical tips for maximizing daylight. The dialogue also touches on circadian rhythms, social jet lag, and the health benefits of embracing outdoor activities.
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INSIGHT

Social Jet Lag's Impact

  • Social jet lag occurs when sleep schedules differ between weekdays and weekends, often due to night owls catching up on sleep.
  • This discrepancy, like changing time zones, negatively impacts health, mood, and cognitive function.
INSIGHT

Origin of Interest

  • Linda Geddes' interest in circadian rhythms stemmed from research on their broad biological impact and a Vegas trip.
  • Las Vegas's artificial environment highlighted the modern disconnect from natural light-dark cycles.
INSIGHT

Light's Impact on Circadian Rhythms

  • Light at night delays circadian rhythms, affecting sleep, alertness, and mood.
  • Dim indoor light compared to outdoor light reduces alertness and circadian rhythm strength.
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