[Postmenopausal osteoporosis. Role of vitamin K in the prevention of osteoporosis].

Low vitamin K1 intake and low plasma vitamin K1 levels are associated with low bone mineral density (BMD) and increased osteoporotic fracture risk in postmenopausal women. Despite the lack of a significant change or the occurrence of only a modest increase in bone mineral density, high-dose vitamin K(1) supplementation improved indices of bone strength in the femoral neck and reduced the incidence of clinical fractures.