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 is a disease in which the bones of the body become brittle making them easier to fracture (a fracture means the same thing as a break).The hips, spine and wrist are usually the first to break. Osteoporosis gradually weakens the bones so that they become susceptible to the slightest trauma.cientists are still not 100 percent sure of the causes of osteoporosis. Bone mass decreases in women naturally between 1 to 5 percent every year after the age of 40. This rate is only about 1 percent in men.
Osteoporosis is a condition that is characterized by bones that are less dense than, and thus not as strong as, normal bone. Osteoporosis increases the risk of breaking a bone (fracture) with even minor trauma, such as a fall from standing height, or even from a cough or sneeze.