MKey1 wrote:
We need to appreciate the distinction you point to when evaluating the vitamin D research. Correcting a deficiency is one thing; adding extra D when non-deficient quite another research question. I've asked some of the people posting to the thread for studies suggesting extra D is helpful in those without deficiency, but nobody's posted any studies like this to the thread yet. I'll see if I can find any during my break time today and post what I find. Pretty clearly, all the posts so far support finding and correcting vitamin D deficiency in patients. It's an important thing for physicians to be doing. I think most people reading this thread would agree at least on that much. Now, let's see what we can find on the issue of supplementation beyond correcting a deficiency.
I think the problem is defining what exactly constitutes a deficiency. After reading various opinions, I decided to do my own research.
Prior to this experiment, I had completely avoided the sun for years. I would guess that I was deficient but I did not get tested to verify. I did not take supplements during this experiment.
I checked the UVB rating each day and spent time in the sun (bikini body exposure) when it was over 3. Since I didn't have a tan, I started very slowly at 10 minutes per session. I gradually upped that to 20-40 minutes depending upon the UVB levels and/or time of day. I developed a nice tan but was never in danger of burning. I thought that last was important. My goal was to do this at least 4 times per week. This was surprisingly difficult as we had a very rainy season. Halfway through the experiment, I heard about the possiblity of Vitamin D being washed off. So I adjusted my showering habits accordingly.
After about 2 months (maybe a bit more) I had my Vitamin D levels tested. My results came in at 53. So I agree with those that say optimum levels are between 50-60. It's what my levels would be naturally, so I'm comfortable with that.
EDIT to add: I also had my husband and son tested at the same time. They both refused to take part in my "wacky" experiment. They don't avoid the sun but they don't intentionally seek it out either. My husband's level was 9. My son's was 19.