Dr Roger Seheult
Critical care and pulmonary physician; co-founder of the medical education platform MedCram; associate clinical professor at the University of California, Riverside School of Medicine.
Pulmonary and critical care medicine • sleep medicine • photobiomodulation and sunlight exposure
About the expert
Focus: Argues that infrared light from the sun acts on mitochondria to improve energy production, and that modern indoor life filters out a wavelength the body uses.
Roger Seheult is a practising ICU and pulmonary physician who is board certified in internal medicine, pulmonary disease, critical care and sleep medicine. He co-founded MedCram, a medical education platform used widely by clinicians and students, and became well known during COVID for walking through primary literature in detail. In recent years he has focused on sunlight and infrared light exposure as an underexamined input to health, drawing on the photobiomodulation research field.
Why this matters
He reads and cites primary literature by name rather than gesturing at it, gives the sample sizes even when they are small, and concedes uncertainty in places others would not. Strongest when he is walking through a study; the fever, sleep and exercise material is mainstream and well handled. Two limits are worth holding. He is not a photobiology researcher, and the near-infrared-to-mitochondria mechanism he is best known for is his own hypothesis rather than published work, so his confidence runs ahead of the human evidence there; he was already making that argument in 2022 and the promised paper has not appeared. Separately, he works inside an explicit framework: NEWSTART, an eight-pillar model from Weimar, a Seventh-day Adventist institution, whose final pillar is trust in God. He trained at Loma Linda and is open about all of it. The framework came before the evidence rather than out of it, which shapes what he looks for and what he treats as already settled, and it is why his claim that most chronic disease follows from violating eight laws is the frame talking rather than a finding.