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Sunlight: Optimize Health and Immunity (Light Therapy and Melatonin)

MedCram - Medical Lectures Explained CLEARLY

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  • Recommended by 6 people, in Hacker News, across 8 different months.
  • Presented by Roger Seheult, MD, as the video describes them
  • The description links 14 papers.
  • Sells products. The upload promotes a product, supplement, program or service, or the speaker sells what they recommend.
  • Debated among experts. Its central claim is contested, so look for the other side.

Assumes interest and some biology. Education, not medical advice.

4.2M views4 years ago6 recommendations

Immunity and infectionSleepCircadian rhythm and lightHow sleep worksThe immune system

Roger Seheult, MD, explains how sunlight and near-infrared light regulate circadian rhythms, melatonin production, and immune health.

Sunlight provides so much more than just Vitamin D: learn from Dr. Seheult of medcram.com about the myriad of benefits from optimizing our exposure to light. Roger Seheult, MD is the co-founder and lead professor at medcram.com He is Board Certified in Internal Medicine, Pulmonary Disease, Critical Care, and Sleep Medicine and an Associate Professor at the University of California, Riverside School of Medicine. This video was recorded on January 21, 2022 HIGHLIGHTS / TIMESTAMPS: Intro The solar spectrum Circadian rhythm highlights and chart What is regulated by circadian rhythm Circadian dysregulation Circadian master clock Blue blockers Light & mood regulation & seasonal affective disorder Dawn simulation light and light therapy box demo Light & cortisol Melatonin from the pineal gland Morning dos and don’ts Evening dos and don’ts Mitochondria & melatonin Melatonin night AND day Details of melatonin production Melatonin summary Infrared radiation Sun exposure & melanoma risk Sunlight penetrates bone & brain Sun exposure and Covid-19 Infrared inhibited by glass Infrared summary Summary & tips LINKS / REFERENCES: The Relationship Between Lux, Lumen and Watt (Tachyon) | tachyonlight.com/the-relationship-between-lux-lumen-and-watt… Infrared and skin: Friend or foe (J of Photochemistry...) | sciencedirect.com/science/article/pii/S1011134415300713 Melatonin as a potential anticarcinogen for non-small-cell lung cancer (Oncotarget) | pubmed.ncbi.nlm.nih.gov/27102150/ The efficacy of light therapy in the treatment of mood disorders (AJP) | pubmed.ncbi.nlm.nih.gov/15800134/ Adj. Bright Light Therapy for Bipolar Depression (AJP) | pubmed.ncbi.nlm.nih.gov/28969438/ Effects of artificial dawn on subjective ratings of sleep inertia and dim light melatonin onset (Chronobiology Int) | pubmed.ncbi.nlm.nih.gov/20653451/ Effects of Artificial Dawn and Morning Blue Light... (Chronobiology Int) | researchgate.net/publication/248396034_Effects_of_Artificial… Circadian rhythms in the hypothalamo-pituitary-adrenal (HPA) axis (MCE) | pubmed.ncbi.nlm.nih.gov/21782883/ Reduced cancer incidence among the blind (Epidem) | pubmed.ncbi.nlm.nih.gov/9730026/ Evening use of light-emitting eReaders negatively affects sleep (PNAS) | pnas.org/content/pnas/112/4/1232.full.pdf Ocular input for human melatonin regulation (NEL) | pubmed.ncbi.nlm.nih.gov/12163843/ Melatonin and the Optics of the Human Body (Melatonin) | melatonin-research.net/index.php/MR/article/view/19/213 Melatonin in Mitochondria (APS) | journals.physiology.org/doi/full/10.1152/physiol.00034.2

Why it's here

6 people recommend this

What people say. Highly recommended for its clear, scientific explanation of how sunlight and infrared light benefit mitochondrial health and reduce inflammation.

alforin Hacker News • Recommends

On “Heat people, not spaces (2015)”

…at of the fire in the winter. We recently (50-100) years have been getting rid of fireplaces and replaced with forced air and baseboard heater that probably generated a lot of health problem. A month ago I discovered this information, bought an small infrared heated and healed in 10 days the winter eczema I have been fighting for 25 years. source: link to this video I hope this help somebody…
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sooheonin Hacker News • Recommends

On “Someone should probably start a bright home lighting company (2019)”

You may be interested in the following video, where a quadruple board certified doc reviews relevant literature regarding sun exposure (and the critical wavelengths involved) and various facets of health: link to this video The review paper that ties many different findings from different fields (optics, endocrinology, circadian rhythms...) together with an audacious spoonful of hypothesizing is this: link
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alforin Hacker News • Recommends

On “Quicker and easier ways to get more light”

We also need infrared light to be healthy, led lights have none. Recent research have shown that infrared light is needed for our mitochondria to work properly. I have cured my 20 year winter eczema in two weeks with a cheap infrared heater. link to this video
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MikeOfAuin Hacker News • Recommends

On “Current guidelines for sun exposure are unhealthy and unscientific – research (2019)”

…un (and specifically NIR). We're more plant than we realise (a different mechanism obviously). And, if you think about it, how on earth could we have not evolved to take advantage of the “free” energy provided by the Sun, particularly the NIR part of the spectrum which actually delivers about half of the energy. Here's an explanation from MedCram: link to this video…
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alforin Hacker News • Recommends

On “Ask HN: HNers with multiple sclerosis, can we get in touch?”

…dern environment is devoid of infrared light: create all sort of inflammation and autoimmune diseases. I had similar symptoms(peripheral neuropathy, headache), heal myself and my eczema that I had every winter in the last 23 years with a few minutes per day in front of a infrared space heater.e It’s this doctor that gave me the idea to try it out. link to this video I also know someone who was dying of IBS in the hospital, at some point he say f*ck it if I am going to die it will be under the sun. He checked out of the hospital, whent to mexico (from Canada) and healed himself without medication. I think a lot of our modern problems are caused by our environment (vit-d, infrared, and other things.) I h…
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alforin Hacker News • Recommends

On “Just Say No”

Please, please, if you have IBS, Crohn or other immune disease try infrared light or better the sun. Especially if you spend a lot of time indoor (engineer) if you live in the north or if your condition get worse in the winter. I know someone who save his life that way. To me it clear up my winter eczema. We need infrared to get rid of inflammation. It’s scientifically proven, free, yet most people are not aware of it. link to this video
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beebmamin Hacker News • Recommends

On “Vitamin D serum levels, supplementation&suicide attempts&intentional self-harm”

There's an interesting theory about mitochondria and melatonin secretion caused by near-infrared light that may be causing the different health outcomes, which historically are correlated very strongly to Vitamin D serum levels (where causation has yet to be shown). Here's a link for a presentation and a proposed mechanism of action around near-IR light by one of the best sources of medical science info on the internet: link to this video
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deetin Hacker News • Recommends

On “The unexpected benefits of sun exposure on skin”

It's surprising this article doesn't significantly mention sunlight's non-UV components, like infrared light. There appears to be increasing evidence to support its ability to influence various processes within the body to positive effect. MedCram has some easily digestible reviews on the topic: - The ability for light to influence glucose metabolism: link - Light's effect on immune response and other processes: link to this video
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muixooziein Hacker News • Recommends

On “Sleep apnea linked to brain and memory problems”

Whatever you do don't start taking Ambien / zolpidem. Solved nothing and now it's hard to quit. I recommend checking out link to this video TLDW sunlight in the morning good. link tldw: you may have apnea and not know it. Better to catch it early on.
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muixooziein Hacker News • Mentions

On “Ask HN: How do you get out of a rut?”

I struggle with this too. The best boost to my mood is when I go for a walk with my wife. Try to get some exercise and sun ( link to this video ). Watch your sleep hygiene. Talk to your doctor. When I was younger I rarely even considered going to a doctor. Perhaps you should get some lab work done to make sure you're not vitamin deficient. I got so depressed that my wife had to make appointments for me and tell my doctor how down I was because I was too embarrassed to admit it. On a lighter note. You might try pomodoro techniques. Sometimes I do a couple of sessions to get started working until I'm "in to it" enough that I don't need that motivation hack. Also I abstain from social media and all entert…
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alforin Hacker News • Mentions

On “Ask HN: HNers with multiple sclerosis, can we get in touch?”

While I agree with you with my alarm bells, I found out too that our medical system is way more a money extraction machine than an health machine. We are chronically deficient in infrared light, it’s killing people, it’s well researched yet there no pill for that: no money, no reach. link to this video
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