osÂ·teÂ·opÂ·aÂ·thy. n. 1. A system of medicine practiced by licensed osteopathic physicians that involves palpation and noninvasive manipulation of the musculoskeletal system in the diagnosis and treatment of physical dysfunction, in conjunction with other medical, surgical, pharmacological, and therapeutic procedures.
Average Age of Presidents. The majority of the presidents were between the ages of 50 and 59 when they were elected into office. The youngest elected president was John F. Kennedy at age 43. The oldest elected president was Ronald Reagan at age 69.
Olshansky pointed out that the average lifespan for the first eight presidents was 79.8 years, roughly equivalent to the life expectancy of American women alive today. This was a remarkable figure in an era when the average man died before 40, he said. Among presidents who served over the last few decades, Ronald Reagan lived to 91, while Carter and the elder George Bush are now 87; life expectancy for all U.S. men, by contrast, currently falls between 75 and 76.