Vitamin D Expert Busts The Big Myth About Sunlight! Can It Cure Dementia?

About this episode

Dr. Roger Seheult discusses the benefits of sunlight and vitamin D, including its potential impact on health and dementia.

Dr. Roger Seheult is a physician specializing in pulmonary and critical care medicine and is widely recognized for his expertise on vitamin D and sunlight’s role in human health. He is the co-founder of MedCram, where he explains the science behind vitamin D, immune function, sleep, and metabolic health in a clear, evidence-based way. Dr. Seheult is known for translating complex medical research into practical guidance that helps people optimize health and resilience. In our conversation we discuss: (0:00) – Sunlight benefits beyond vitamin D (3:39) – Can sunlight increase lifespan (6:36) – Sunlight versus outdoor activity benefits (13:20) – Best time of day for sunlight (19:52) – Morning cortisol: wake time versus sun timing (21:01) – Is sunlight best cortisol trigger (22:56) – Front-loading cortisol and workout timing (27:26) – Blue light effects on circadian rhythm (33:36) – Why earlier sleep improves energy (39:12) – Can late sleepers fully adapt (40:26) – Ideal sleep and wake schedule (44:01) – Can weekend sleep make up deficits (45:39) – Daily melatonin use safety (51:04) – Recommended sleep supplements (1:00:30) – Are chronotypes fixed or flexible (1:00:53) – Sunscreen…

People in this episode

Guest: Dr Roger Seheult

Topics covered

• vitamin D
• sunlight
• health
• dementia
• sleep
• cortisol
• circadian rhythm

Keywords

• immune function
• metabolic health
• sleep supplements
• sunscreen

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