Regenerative Health with Max Gulhane, MD

Hidden Health Costs of Screens and Artificial Light

Jan 3, 2026
Explore the hidden dangers of screens and artificial light on children's health. Discover how these technologies disrupt circadian rhythms and can lead to serious developmental issues. Learn about the differences between natural sunlight and artificial lighting, and why LEDs might be more harmful than you think. Uncover the impact of wireless radiation in classrooms and its effects on cognition. Get practical tips for healthier screen habits, including limiting exposure and embracing morning sunlight. Protect your family's well-being in a tech-driven world.
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INSIGHT

Light Is The Body's Master Timekeeper

  • Light (especially blue wavelengths) entrains the brain's master clock in the suprachiasmatic nucleus.
  • Proper timing of daylight and darkness synchronises peripheral organs and optimises physiology.
INSIGHT

Indoor Lighting Can't Replace Sunlight

  • Modern indoor lighting lacks the intensity and full spectrum of sunlight and fails to provide robust circadian cues.
  • Artificial light at night suppresses melatonin and shifts sleep timing, damaging sleep quality and downstream physiology.
INSIGHT

Refined LEDs Are A Poor Light Diet

  • LEDs and CFLs emit a narrow visible-only spectrum while sunlight includes UV and infrared.
  • Refined visible-only lighting is like 'high fructose corn syrup' for light and disrupts circadian and mitochondrial biology.
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