From 1988-1994 to 2015-2018, American bio-aging models in the period 1988-1994 to 2015-2018 were inspected. As a result, although the bio -aging speed has slowed down, it is found that people with lower education are older. Biological age, unlike the time since you were born, showing the age of cells and tissue.In the late 1980s and early 1990s, the biological era of adults who had not graduated from high school was an average year than university graduates. However, in the period of 2015-2018, this difference has increased nearly two years. The group findings show that people with university education are becoming biological slower, assistant Professor Mateo Farina said.This research also supports other studies on biological aging and long -term life. Another study at the University of Columbia revealed that those who lost two or more relatives biological compared to the symbolic measurements.The doctor's impact on the loss of relatives on DNA signs in different periods of life has not been fully studied. This study produced strong evidence that the losses from childhood to adulthood. Models, nutrition and physical activity plays the main role between factors affecting biological aging.