Here is a description of a few believed to play a role in depression: 1  Acetylcholine enhances memory and is involved in learning and recall. 2  Serotonin helps regulate sleep, appetite, and mood and inhibits pain. Research supports the idea that some depressed people have reduced serotonin transmission.
Osteoporosis, which means porous bone, is a disease in which the bones gradually become weak and brittle. The condition often results in broken bones, or fractures, especially of the hip, wrist, and spine, even from simple activities like lifting a chair or bending over.steoporosis, which means porous bone, is a disease in which the bones gradually become weak and brittle. The condition often results in broken bones, or fractures, especially of the hip, wrist, and spine, even from simple activities like lifting a chair or bending over.
Osteoporosis is a disease where decreased bone strength increases the risk of a broken bone. It is the most common reason for a broken bone among people who are old.Bones that commonly break include the back bones, the bones of the forearm, and the hip.Until a broken bone occurs there are typically no symptoms. People with scoliosis of unknown cause also have a higher risk of osteoporosis. 2  Bone loss can be a feature of complex regional pain syndrome. 3  It is also more frequent in people with Parkinson's disease and chronic obstructive pulmonary disease. 4  People with Parkinson's disease have a higher risk of broken bones.