Athletes:

The 2020 Tokyo Olympic Games are likely to feature the first transgender athlete, a topic that will be highly contentious during the competition. But transgender and intersex athletes such as Laurel Hubbard, Tifanny Abreu, and Caster Semenya didn't just turn up overnight. Both intersex and transgender athletes have been newsworthy stories for decades.

This eye-opening study adds to the scarce scholarly literature on professional athletes, bringing empirical rigor to issues often clouded by mystery and hearsay. It identifies socioeconomic, demographic, and career variables as risk factors for mortality among former NBA and NFL players, along with hypotheses to be tested relating to elite athletes and other U.S. populations. A detailed multivariate analysis compares mortality factors, rates, and outcomes within and between the two leagues, comparing them also with the general U.S.