Osteoporosis is the gradual reduction in bone
density due to the loss of essential bone minerals, such as calcium.
From the age of 35 onward bones slowly begin losing calcium in both
men and women, but with the onset of menopause the loss of calcium
is far greater in women. Some of this can be attributed to hormonal
changes, as reductions in oestrogen contribute to the loss of calcium.
When this occurs, bones become frail and the risk of fracture is
increased particularly in the spine, hip and wrist.