Vitamin K may reduce risk of bone fracture

Vitamin K supplementation might reduce the risk of osteoporotic fracture, according to a systematic review.

Researchers analysed data from seven trials including 1,000 patients who were given oral vitamin K supplementation or placebo. Most patients were postmenopausal Japanese women with or without osteoporosis.

All the trials showed that vitamin K supplementation reduced the risk of hip fracture by around 77 per cent, vertebral fracture by 60 per cent and nonvertebral fracture by 80 per cent, compared to placebo.

The researchers warned that further work needed to be done to confirm a link between vitamin K deficiency and fracture risk, but that patients at risk for fracture should be encouraged to consume a diet rich in vitamin K, which is mainly found in green leafy vegetables.

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