The participants in the study of the health and endocrine functioning consisted of randomly selected Boston-area men ages 45-79, born between 1916 and 1945. Data was collected initially in 1987-1989, and two follow up visits were done in 1995-1997 and 2002-2004. There were a total of 2,769 observations taken on 1,532 men.
27 October 2006
According to this story, American men have less testosterone than their fathers. Doctors say that this is true even holding constant age, smoking and obesity. We note, though, that this is not actually a study of American men:
Posted by David at 6:31 PM