There are many people living in their 80s and 90s. Researchers have tried to delve into issues of quality of life and health during aging.  A study on mouse recently throws light on these questions. This study demonstrates that a high fat diet along with increasing longevity also improves physical strength. Eat Fat - Live Longer And Healthier The results show a 13 % increase in the median life span of the mice on a high carb versus high fat diet. For humans this may amount to an increase o...