If you thought popping calcium pills could prevent osteoporosis you might not be entirely right. New research by a researcher of Indian-origin shows that a lesser-known protein called osteocalcin might play a very important role for bone health. And what's interesting is that Vitamin K found in green leafy vegetables like spinach is known to boost its levels in the body. A new study from engineering researchers at Rensselaer Polytechnic Institute shows for the first time how the little-understood protein osteocalcin plays a significant role in the strength of our bones. The findings could lead to new strategies and therapeutics