Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women.

Biological effects of vitamin K2 on bone quality

Dietary vitamin K intake in relation to cancer incidence and mortality: results from the Heidelberg cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC-Heidelberg).

Vitamin K2 supplementation improves hip bone geometry and bone strength indices in postmenopausal women.