Roger Seheult, MD
rogerseheult.bsky.social
Roger Seheult, MD
@rogerseheult.bsky.social
Pulmonary, Critical Care, and Sleep Physician
Co-Founder of MedCram.com
Faculty Appointments at Loma Linda Univ and UCR Schools of Medicine
Interferon again
Why are older people more vulnerable to flu?
A new report finds age-related high expression of ApoD as a culprit that reduces the first line interferon immune response
www.pnas.org/doi/epdf/10....
September 12, 2025 at 3:42 AM
🌞
Sunlight has frequencies that pass through the human body and are beneficial for you. They are lacking in LED bulbs and LED bulbs may be harmful. Study published today in the Nature: Scientific Reports:
www.nature.com/articles/s41...
Longer wavelengths in sunlight pass through the human body and have a systemic impact which improves vision - Scientific Reports
Scientific Reports - Longer wavelengths in sunlight pass through the human body and have a systemic impact which improves vision
www.nature.com
July 9, 2025 at 7:22 AM
Reposted by Roger Seheult, MD
BREAKING: Scientists are staging a “science fair” in the lobby of a Congressional building to tell elected officials about the critical knowledge the US will lose because their research grants have been canceled.
July 8, 2025 at 3:31 PM
Reposted by Roger Seheult, MD
If you’ve been keeping up with MedCram updates, you know that heat helps the immune system keep us healthy. But what’s the best application: hot tub, sauna, or IR sauna? Have a look at the data with Dr. Seheult to find out, in the latest video: buff.ly/19gQFZK
July 4, 2025 at 5:19 PM
Just published the video on hot tubs versus saunas versus infrared saunas and which one gets your core body temperature up fastest.

youtu.be/US2FRENpTeQ?...
Hot Tub vs. Traditional Sauna vs. Infrared Sauna: Which is Hotter!
YouTube video by MedCram - Medical Lectures Explained CLEARLY
youtu.be
July 4, 2025 at 5:09 PM
Double blinded randomized controlled trial of near infrared light therapy (850 nm) showed benefit in humans ONLY in the winter! Indicating that winter is the most important time to get outside (or get one of these lamps):

pmc.ncbi.nlm.nih.gov/articles/PMC...
Effects of Near-Infrared Light on Well-Being and Health in Human Subjects with Mild Sleep-Related Complaints: A Double-Blind, Randomized, Placebo-Controlled Study
In Western societies, people spend most of their waking hours indoors, exposing themselves to virtually no sunlight. Natural sunlight contains all visible and non-visible spectral characteristics of l...
pmc.ncbi.nlm.nih.gov
February 1, 2025 at 5:41 AM
Reposted by Roger Seheult, MD
The recent Canadian H5N1 case is showing two mutations that may favor human transmission. Learn more about the findings in the full MedCram video: buff.ly/4i3n3Gu
November 25, 2024 at 7:00 PM
Reposted by Roger Seheult, MD
There is a viral surge sweeping the U.S. right now. Influenza A, in particular, is landing many in the emergency room, especially in the West. In the latest MedCram video, Dr. Seheult discusses this year's flu season, and what it means. See it here: https://buff.ly/4a8qRmj
January 9, 2025 at 6:41 PM
Reposted by Roger Seheult, MD
Roger Seheult, MD, of MedCram explains why it's not always best practice to treat a fever. Watch the whole MedCram lecture here: https://buff.ly/40polDL
January 23, 2025 at 4:45 PM
Amazing paper that will make you think twice about giving Tylenol for that fever and maybe even try to elevate your body temperature like we've been telling you to do:
academic.oup.com/nar/article/...
Summary:
January 13, 2025 at 5:54 AM
Getting patients outside with respiratory diseases is really surprising me.

Latest one was COVID + on 10 L of oxygen and after just one day outside for 20 minutes, we’re now down to 4 L next day (also getting steroids etc). Patient felt so good and thanked the staff.
L.day
December 19, 2024 at 10:51 PM
Harvard Dermatologist TEDx talk on how to prevent skin aging. She gets it: hint: mitochondria
www.youtube.com/watch?v=ThaF...
Beyond the surface: Skin health a key piece in longevity | Anna Mandinova, MD, PhD | TEDxBoston
YouTube video by TEDx Talks
www.youtube.com
December 19, 2024 at 6:26 AM
The recent study by Glen Jeffery showing that red light reduces serum glucose after glucose tolerance test made me think that this is something that’s usually testable. I get so many comments like this:

pubmed.ncbi.nlm.nih.gov/38378043/
December 16, 2024 at 5:13 PM
Notice how small changes in sunrise and sunset times can have dramatic effect on human exposure to sunlight.
December 16, 2024 at 1:45 AM
Reposted by Roger Seheult, MD
MedCram doc @rogerseheult.bsky.social 's command of data and credible studies just...blows my mind. 🤯 I want to be him when I grow up.
youtu.be/oEhp6UlYgOo
How to Fix Your Sleep | Dr. Roger Seheult
YouTube video by Viva Longevity!
youtu.be
December 9, 2024 at 8:16 PM
If you want to read just one scientific paper to understand Sunlight, melatonin, and mitochondrial health, this is the one: This is a great review paper.
www.mdpi.com/2079-7737/12...
Melatonin: Both a Messenger of Darkness and a Participant in the Cellular Actions of Non-Visible Solar Radiation of Near Infrared Light
Throughout the history of melatonin research, almost exclusive focus has been on nocturnally-generated pineal melatonin production, which accounts for its circadian rhythm in the blood and cerebrospin...
www.mdpi.com
November 30, 2024 at 5:13 AM
My great great great great great great great grandfather Robert Seheult painted this painting, and it is now been fully restored and put back in the chapel in Brittany, France.
Amazing story!
November 27, 2024 at 8:55 AM
Canadian teenager’s H5N1 genes show signs of mutations that are known to favor human infection. Not known if there at first or developed subsequently.

New release from MedCram:

H5N1 Mutations Detected in Canadian Case Favor Human Transmission
youtu.be/Z_NplGxtF9I
H5N1 Mutations Detected in Canadian Case Favor Human Transmission
YouTube video by MedCram - Medical Lectures Explained CLEARLY
youtu.be
November 25, 2024 at 5:50 PM
Great interview that I did with Viva longevity!!

youtu.be/Eg0Uh-WhsR8?...
The AMAZING Healing Power Of Red Light Therapy | Dr. Roger Seheult
YouTube video by Viva Longevity!
youtu.be
November 24, 2024 at 10:29 PM
Sat down and did an interview recently about sunlight. Thought you should watch.

youtu.be/UF8UE6cJaWQ?...
Sunlight Deficiency As A Contributor To Poor Health: Roger Seheult, M.D. (@Medcram)
YouTube video by Conquer Aging Or Die Trying!
youtu.be
November 20, 2024 at 6:01 PM
Reposted by Roger Seheult, MD
Application of sunlight continues to show results in the treatment of illness, sometimes with surprising results. In one case, a dying boy's wish to go outside may have saved his life. Learn how sunlight can help keep you healthy in the full MedCram video: buff.ly/3Z91OeW
November 18, 2024 at 4:59 PM
H5N1 normally binds to a2,3 sialic acids (birds) but below is a graph showing which mutations are likely to allow it to bind to a2,6 sialic acids (humans). Guess which 2 mutations our H5N1 case in Canada has? Correct 190 and 226. Not sure if contracted that way or made denovo.
November 17, 2024 at 9:03 AM
This is Astrophysicist Bob Fosbury's hand in front of an infrared light source. Notice that the light goes right through and you don't even see bones. Any questions?
November 15, 2024 at 4:29 AM
Quick review of sunlight benefits:

youtu.be/SXfOtQkHlig?...
COVID 2024 Surge: The Most Accessible Defense
YouTube video by MedCram - Medical Lectures Explained CLEARLY
youtu.be
November 14, 2024 at 1:35 AM