A recent study by researchers at University in Spain found that Vitamin K may strengthen bones. Older people who consumed more vegetables high in vitamin K had a higher bone mineral density than those consuming less Vitamin K. (Study by researchers at Universitat Rovira i Virgili, Reus, Spain, published in Bone. Bottom Line Personal).
Vegetables high in vitamin K? Look to spinach, broccoli, asparagus, parsley, and leafy green vegetables.