Therefore, it does not have all the benefits and risks of estrogen. Osteoporosis is a disease that causes bones to become thinner. Thin bones can break easily. Most people think of their bones as being solid like a rock. Actually, bone is tissue, just like other parts of the body-your heart, brain, or skin, for example.
Bone just happens to be a harder type of tissue.
Bone is always changing. Your body keeps your bones strong and healthy by replacing old bone with new bone. When someone has osteoporosis, the body removes more bone than it replaces. This means that bones get weaker and are more likely to break. Osteoporosis is a bone disease that is quite common, especially in older women.