Mer än 400 IE vitamin D3 är vad som behövs
Man ska äta vitamin D3 snarare än D2 och doser mindre än 400 internationella enheter gör igen nytta, i alla fall inte på benskörhet.
Doses under 400 international units a day had no discernible effect, but for doses larger than that, the pooled data showed a 20 percent reduction in the risk for all nonvertebral fractures, and an 18 percent reduction for broken hips. The type of vitamin D made a difference. The effect of vitamin D3 was significant, with a 23 percent risk reduction, but there was no significant reduction with vitamin D2. The authors suggest that D3 is more effective in maintaining blood levels of
Läs mer: Vital Signs - Vitamin D Pills May Prevent Fractures in Older Adults - NYTimes.com