Porosis means porous. Together they mean thinning or loss of bone.
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. Estrogen deficiency that occurs during menopause accelerates bone loss. Risk Factors Age. Age is a factor in that the older you are, the greater your risk of developing osteoporosis.