Dhru Purohit Show

Light As Medicine: The Untold Science Behind Sunlight and Light Therapy for Disease Prevention and Total Body Health with Roger Seheult, MD

24 snips
Dec 3, 2025
Dr. Roger Seheult, a quadruple board-certified physician and co-founder of MedCram, shares fascinating insights on how sunlight acts as a crucial nutrient for our health. He discusses the modern light deficiency many face and its links to cognitive decline and obesity. Seheult breaks down the role of infrared light in boosting mitochondrial function and reducing inflammation. He offers practical tips for incorporating more sunlight into daily life and emphasizes the importance of light in overall well-being, illustrating its effects with compelling clinical anecdotes.
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INSIGHT

Sunlight Effects Beyond Vitamin D

  • Geographic sunlight (latitude, UVA) correlated with lower COVID mortality independent of vitamin D production.
  • This implies sunlight benefits extend beyond vitamin D to other photometabolic effects.
INSIGHT

Light Modulates Inflammation And Metabolism

  • Infrared reduces inflammatory cytokine signaling via effects on toll-like receptor pathways in cells.
  • Photometabolism "greases the skids" of metabolism rather than synthesizing new molecules like plants.
INSIGHT

Modern Lighting Creates A Processed Light Diet

  • Modern buildings, low‑E glass and LEDs remove infrared from indoor environments, producing a processed "light diet."
  • This engineered reduction likely contributes to chronic light deficiency and health decline.
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