Why does the human body to shrink during aging? M anula will lose weight because of muscle and fat density is reduced, so that their bodies are smaller. The backbone of their stops regenerating and solidified, it makes them become smaller. Actually, every man becomes a little shorter at the end of the day because of lack of water in each spinal disc. However, the shrinkage is to be permanent to the elderly because of the water contained in each disc of the spine they are much less than the younger and did not re-produced at night. In addition, the spine will be more vulnerable in old age, a condition known as osteoporosis. Patients with osteoporotic bone is dense and strong enough to sustain their weight, even the elderly beberpa body becomes bent and could not stand upright because they are fragile spine. Shrinkage of the body is closely linked to diet and exercise. So make sure you get enough fresh air, nutritious food and exercising regularly. The amount of shrinkage is experienced depends on the extent of your healthy lifestyle. Generally, men will be reduced by about three inches and five women senitmeter from ages 30 to 70.