What Is the Massachusetts Male Aging Study?
The study that established beyond reasonable doubt a generational decline in testosterone levels
The Massachusetts Male Aging Study—often referred to as the “MMAS” for short—is one of the most important studies for understanding what’s happening to testosterone today across the Western world.
The MMAS was a large-scale, longitudinal, population-based cohort study of men from the Boston area. In simple terms, a large number of men were selected at ra…
