From the information i have gathered about health. The body grows new cells in such a way that we can literally have a whole new body in three years. Yes attitude means a lot, many years ago i saw, on tv a program on aging. an elderly woman was asked "what is the key to longivity and her reply was, "letting go, whether it is gray hair , a tooth, a loved one.inspiration can prolong your life. If you have a "good" reason for   wanting to be here, you will probably be here a long time.