Body fat reportedly tracks testosterone levels more closely than age in nearly 5,000 men

A post says researchers analyzed data from nearly 5,000 men ages 20–59 and found that body-fat measures explained more variation in testosterone levels than age did. The post notes that the study captured a snapshot in time, so it cannot establish whether fat gain causes testosterone decline or the reverse. Testosterone was measured only once, and the findings do not establish clinical diagnoses.