Dr. Roach: Anything under 8,000 IU of vitamin D won't cause an overdose

Dear Dr. Roach: Several years ago, in my early 80s, my gynecologist told me (like all women who mainly stayed indoors) that I should be taking 4,000 IU of vitamin D3 daily. Yet today, I read an article warning that many people are overdosing on vitam... [3265 chars]