Since #VitaminD is trending on this site right now… here is a collection some of our favorite papers.
Get some ☀️ today & build up your D levels! It's correlated w almost every aspect of health.
(Also...it's not a vitamin, it's a secosteroid hormone, but don't get us started)
Women with Vitamin D levels >30 ng/ml had
- 27% reduced mortality from all causes
- 22% lower odds of breast cancer
(presented at the @ASCO annual meeting)
In patients with existing cardiovascular disease, each +10 nmol/L increase in Vitamin D levels was associated with
- 12% reduction in all cause mortality
- 9% reduction in CVD mortality
"Put simply, most experts – scientists and doctors – have not taken Vitamin D seriously, despite the growing evidence, because it is made in the mystical touch of sun on skin rather than by white-coated technicians in a laboratory."
Since we focus here on the connections between light and health, we often get asked “wait… how exactly does light exert such a big biological effect on the body?”
Good question!
Time for a science🧵…
Light can be thought of in two ways:
1) Energy.⚡️
Photons contain and convey energy.
2) Information. ℹ️
Light comes in different frequencies, and in a natural light environment these convey what time of day it is, what season it is, etc.
Both drive biological effects.
Let’s start with energy.⚡️
Our bodies - especially the eyes & skin - contain photoreceptors, pigmented cells which can ‘accept’ photons of light. These are called chromophores.
Proteins, cellular water, metals like copper, iron & other cofactors can all act as chromophores in us.
"Sol Remedorium Maximum Est" (The Sun is the Greatest Medicine)
- Pliny The Elder, 77 AD
Below article is from Psychiatric Quarterly, April 1933
We've known this stuff for a long time.
Get some ☀️☀️☀️
Here's another one from almost 100 years ago.
"Ultraviolet Light Therapy and Its Relation to Chronic Diseases."
- American Journal of Clinical Medicine, June 1922
"Finsen was the first observer to study the the different rays of the sun with a view of determining the remedial value of the various rays. He found that the therapeutically active rays were, for the most part, the ultraviolet...
"Studies in the past decade indicate that insufficient sun exposure may be responsible for 340,000 deaths in the United States and 480,000 deaths in Europe per year, and an increased incidence of breast cancer, colorectal cancer, hypertension, cardiovascular disease...
2/5
metabolic syndrome, multiple sclerosis, Alzheimer’s disease, autism, asthma, type 1 diabetes and myopia. Vitamin D has long been considered the principal mediator of beneficial effects of sun exposure. However, oral vitamin D supplementation...
3/5