As we age, we don't have the same ability to repair tissue damage and build bones as we did in our youth. Appetite and the sense of taste often diminish, resulting in less than optimum nutrition. Disorders such as osteoporosis, memory loss, and cataracts, although not inevitable, become more likely.

To maintain senior's health, one must get adequate amounts of cell food and cell water. For bone health, weightlifting and stretching are useful. It is also extremely important that we have social contact and mental stimulation.