In Part 1 of this episode about light as medicine, Dr Roger Seheult talks us through the light spectrum of UV to infra-red and the importance of exposure to types of light at certain times of the day to regulate our circadian rhythm. Many of us suffer from some form of circadian rhythm dysfunction due to the technology-driven societies we live in. As a result, the cues our body takes from the external environment can become out of sync with our internal environment, causing an imbalance in many of our basic functions - the processes that aid good quality sleep, metabolic function, and everything down stream of these. We also discuss the impacts of light on hypersomnia, sleep inertia, hunger and satiety cues, the best times of day to eat, insulin sensitivity, infra red light and oxidative stress.

Dr. Seheult is currently an Associate Clinical Professor at the University of California and an Assistant Clinical Professor at the School of Medicine and Allied Health at Loma Linda University. Dr. Roger is quadruple board-certified in Internal Medicine, Pulmonary Diseases, Critical Care Medicine, and Sleep Medicine. In 2012, he and Kyle Allred founded MedCram, a medical education company that creates videos utilised by hospitals, medical schools, and hundreds of thousands of medical professionals from all over the world (and over 1.5 million YouTube Subscribers).

His passion is "demystifying" medical concepts.

Tune in next week for Part 2 for more on the emerging research around red light, infra-red light, the impact of sunlight on Covid-19 surges, long covid, and possible tools to support in recovery from long covid.

Find Dr Roger's work:

MedCram Website

MedCram YouTube

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Studies mentioned in this podcast:

Autumn COVID‑19 surge dates in Europe correlated to latitudes, not to temperature‑humidity, pointing to vitamin D as contributing factor

Ultraviolet A radiation and COVID-19 deaths in the USA with replication studies in England and Italy

A geographical approach to the development of hypotheses relating to Covid-19 death rates

Cardiopulmonary and hematological effects of infrared LED photobiomodulation in the treatment of SARS-COV2

Insufficient Sun Exposure Has Become a Real Public Health Problem

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