"On the weeks I cannot sunbathe, I take 5,000 IU/day of vitamin D."
He hawks it on radioinfomercials with vitamin K2, magnesium and boron, IIRC. I take 4000 IU of vitamin D3. I get another 400 IU of D2 in a multivitamin. Everyone is different. IIRC, I posted a story about vitamin D from this same source that told about black taking vitamin D were more likely to get calcified arteries.
Discussing findings from a recent cross-sectional study involving 340 African American patients with type 2 diabetes, Dr. Buckley said that serum 25-hydroxyvitamin D levels were positively associated with increased calcified atherosclerotic plaque in the aorta and carotid arteries (J. Clin. Endocrinol. Metab. 2010 Jan. 8, 2010; [doi:10.1210/jc.2009-1797]All I'm saying is that if you're going to play your own doctor, you better know what you're doing. Vitamins are not necessarily benign. You can overdose on vitamin A too. There was a study to prevent prostate cancer with vitamin E. Those who got vitamin E had 17 % more diagnoses of prostate cancer according to a doc on Charlie Rose last night.
The effects of supplementing vitamin D to raise the serum 25-hydroxyvitamin D level on atherosclerosis in African Americans are unknown. Prospective trials are needed, the investigators said.
Consider that your body mostly exposed around the noonday sun can produce 50000 iu of vitamin d in 15-20 minutes. With no ill effects.
Taking 5-10000 iu’s per day in the winter is not outrageous with perspective.
The vitamin E study that recently floated the notion of a increased risk for prostate cancer is totally bogus. It was an interview based retrospective that included a bunch of self-selected E users. Men who go to their doctors with elevated psa scores are frequently given E by their doctors. Some of the men go on to develop prostate cancer and blow up the calculated risks for prostate cancer. duh