Osteoporosis is a disease in which the bones become brittle and weak.
Cause Osteoporosis occurs when the hard mineral calcium in bone is lost, leaving bones weak. Weak, fragile bones are more likely to break, causing people with the disease discomfort and the inability to move normally. Risk factors Osteoporosis is caused by a combination of genetic and environmental factors. It appears to be a result of the ageing process in some people who have several of the risk factors. Women who are underweight, physically inactive, or have a family history of the disease are at greater risk.