Vitamin D has been touted as the vitamin of the last decade. There are many studies showing that lower levels Vitamin D can be associated with cardiovascular disease, autoimmune diseases and even cancer Vitamin D and calcium supplements are recommended for preventing fractures, but studies have reported conflicting results on the effectiveness of vitamin D with or without calcium for reducing fracture risk.
While observational studies have shown that higher 25-hydroxyvitamin D (25[OH]D) blood concentrations are associated with lower risk for any fracture and hip fracture specifically, randomized controlled trials demonstrate no fracture risk reduction with vitamin D supplements alone, according to a systematic review and meta-analysis published in JAMA
These studies are important. I do feel have did initially over prescribe doses of vitamin D, but there was NO harm. No patient exhibited vitamin D toxicity and none had increased liver enzyme function.
all randomized controlled trials of vitamin D alone or calcium plus vitamin D were published before January 1, 2019, and included ≥500 participants and ≥10 incident fractures.
There are many supplements to be taken to reduce fracture risk.