Breaking Medical News Archive
Folic Acid and Vitamin B12 Cut Hip Fracture Risk
posted 03/03/05
Folic acid and vitamin B12 supplements cut the risk of hip fracture
by approximately 80 percent, according to a new JAMA study. The two-year
randomized trial included 559 Japanese patients aged 65 and over
who had had strokes with residual hemiplegia, putting them at high
risk for osteoporosis, falls, and hip fracture. Treatment consisted
of 5 mg of folic acid and 1500 mcg of vitamin B12 daily over a two-year
period. The dramatic effect of folic acid and vitamin B12 in reducing
fracture risk appears to be related to its ability to cut plasma
levels of homocysteine. At higher levels, homocysteine appears to
interfere with the formation of collagen cross-links within bone,
weakening the bone matrix and increasing risk of osteoporotic fractures.
Sato Y, Honda Y, Iwamoto J, Kanoko T, Satoh K. Effect of folate
and mecobalamin on hip fractures in patients with stroke: a randomized
controlled trial. JAMA. 2005;293:1082-8.
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