Osteoporosis can be defined literally as “porous bones”. It is a slowly progressive disorder of the skeletal system, that is, the system of bones and joints. Porous bones are a result of demineralization of bones. The bone-mass decreases over time. The resultant loss of strength of bones can result in fractures and broken bones.
1Facts and Figures about Osteoporosis
Osteoporosis is a very common occurrence, more so in women than in men. Each year it is estimated to cause 8.9 million fractures around the globe.  Every one in three women, and one in five men above 50 years of age are at risk of osteoporosis. The risk of osteoporosis in women exceeds the risk of heart disease, stroke and breast cancer combined.
The most common sites of fractures include the hip, the leg, the vertebra, or the wrist.