Vitamin D update
So I told you last summer I was doing a Vitamin D experiment and that I’d report back. After a summer in the sun playing tennis and running, I was tanned and probably as high in Vitamin D as I would get in a year.
I get a moderate amount of sun (while trying to avoid being burned) because (a) I love playing sports outside and (b) I think the sun helps us avoid cancer, have strong bones, and a strong immune system, among other things. I took the high-accuracy Vitamin D blood test and scored quite high, a 79. I asked my LNP who interprets these test results for a grade like you’d get in school, for that score, since I can’t find a chart. She gave me a B+. She said many people have extremely low scores, like 5 or 10.
So the next part of my experiment was to take Vita D (pill form) through the winter. I was out of the sun the entire 8 months except for a few sunny days in Peru, and a day or two of spring skiing lately. I had never taken Vita D in my life, and I hadn’t taken a vitamin supplement of any kind for years.
So I took 3,000 IU Vitamin D daily, for 8 months (a very conservative amount). My score was a 61 when I went back for the test last week.
So my Vitamin D level fell–a lot–because the synthetic version does not help me anywhere near as well (if at all) as the natural way (sunshine) does.
This is certainly in keeping with my assumption, that natural ways to get vitamins, antioxidants, minerals, enzymes–are superior and are utilized much more efficiently and effectively by the body.
I wonder about lots of things. First, should I take 5,000 IU instead? (Was my dose too low?) I can’t answer that based on this experiment, and you can overdose on Vita D. I’m going to take 5,000 IU next winter. Second, how do I know that my level of 61 isn’t the exact same it would be if I didn’t supplement? I can’t know that.
What I do know is that the sun gave me a close-to-optimal amount of Vita D.
Posted in: Research