Osteoporosis is a silent, progressive disease that causes bones to become thin and brittle, making them more likely to break. Ironically, bones naturally become thinner as you age, and as old bone dissolves and is absorbed into the body faster than new bone is made. As this happens, the bones lose minerals (such as calcium), heaviness (mass) and structure, which makes them weaker. Osteoporosis speeds up the process making it more severe. More than 28 million people in the U.S. are at risk of developing osteoporosis and up to 1.5 million fractures/year are attributable to osteoporosis. While there is no cure, the good news is this disease is largely preventable.