https://www.ncbi.nlm.nih.gov/m/pubmed/28768407/
以前的推荐量是 600 IU/day https://en.wikipedia.org/wiki/Vitamin_D
现在发现 8000 IU/day 才可以,以前的标准 "may be too low for safety and associated with higher all-cause mortality"
https://news.ycombinator.com/item?id=15867918 hacker news 上相关的讨论,第一句 Anecdotally, I had this discussion with a cardiovascular interventionist specialist about seven or eight years ago when I was managing a team of cardio theatre orderlies in a private hospital. He made the comment, "mark my words, in about five to ten years time there will be a major scare about needing to absorb more vitamin D ”