What is osteoporosis ?

The gradual degeneration of bones. It is mainly associated with decreased levels of estrogen in women, old age, decreased calcium and vitamin D intake and a lack of weight bearing exercise. It can happen to men but usually affects post menopausal women. Source(s): I'm a nurse.

A BRITTLE BONE DISEASE,MOSTLY FOUND IN ELDERLY WOMEN
The bones become brittle with old age.. One way to counter this is to increase your calcium intake with cheese, milk and or pills.
brittle bone disease caused by a severe lack of calcium, I think.
Osteoporosis is a disease in which bones become fragile and more likely to break. If not prevented or if left untreated, osteoporosis can progress painlessly until a bone breaks. These broken bones, also known as fractures, occur typically in the hip, spine, and wrist.
Osteoporosis is a disease of bone in which bone mineral density (BMD) is reduced, bone microarchitecture is disrupted, the amount and variety of non-collagenous proteins in bone is changed, and a concomitantly fracture risk is increased. Thus, osteoporotic bones are susceptible to fracture. Osteoporosis is defined by the World Health Organization (WHO) as either a bone mineral density 2.5 standard deviations below peak bone mass (20-year-old person standard) as measured by DEXA or any fragility fracture. While treatment modalities are becoming available, prevention is still the most important way to reduce fracture. Due to its hormonal component, more women suffer from osteoporosis than men.