A daily vitamin D supplement of 2000 IU is sufficient, but this is not just about vitamin D. The sunlight coming through the various kinds of atmospheres from different dimensions provides much more than vitamin D. Only 15 minutes per day is enough.
Bryan Johnson doesn’t understand that this picture and this post are related.
He asked for help from people working on T-cells.
Here it is:
There are strong reasons to believe that inadequate sun exposure is a major factor in the modern increase in autoimmune disease:
Low vitamin D is associated with autoimmunity but supplementing it doesn’t reverse it.
There is a clear latitudinal gradient for many autoimmune diseases.
We use UV light to treat T cell driven immune diseases like eczema, psoriasis, vitiligo and a cancer of T-cells called CTCL.
We literally take your blood out of your body, expose the T cells to UV light then put them back in as a treatment for graft-vs-host-disease (GVHD) and CTCL.
So, eczema, psoriasis, vitiligo, GVHD and CTCL are all T cell diseases that UV light treats.
Multiple sclerosis, type 1 diabetes and rheumatoid arthritis are all T-cell diseases that are less common in people who get more sunlight.
UV exposure actively generates regulatory T and B cells that protect against autoimmune disease.
Autoimmune gastritis is a T-cell disease.
I’ll admit that there is no direct evidence showing increasing UV reduces the incidence of autoimmune gastritis. It’s never been studied, so there can’t be.
But the chain of reasoning linking the evidence we have about autoimmune disease and UV exposure to autoimmune gastritis being related to inadequate UV exposure is strong.
Not to mention the even stronger evidence that UV exposure releases nitric oxide from the skin, driving a substantial reduction in cardiovascular mortality.
My advice to Bryan (and everyone else) would be to skip experimental, expensive, unproven stuff and just get as much non-burning sun exposure as you can on a consistent basis.
I know it’s boring.
But it’s also free, natural and has an enormous body of science behind it.
And I know what you’re thinking:
SKIN CANCER!!!!
Yes, sun exposure increases your risk of skin cancer. But the consistent, non-burning exposure I’m talking about does not increase your risk of dying from melanoma or other skin cancers.
That’s the intermittent, blistering-sunburn pattern. In fact, farmers and other outdoor workers are less likely to die of skin cancer than indoor workers.
The benefits (less autoimmune disease, less cardiovascular disease, less neurological disease) far outweigh the hassle and scars from seeing a dermatologist once or twice a year.
But, but, but photoaging?
Yes, sun causes wrinkles and makes your skin look older.
But would you rather be a little wrinkled and scarred at your 90th birthday, healthy and surrounded by your family?
Or look great at 70 and not make it to 80?