In 2014, former professional swimmer and the most-decorated Olympian of all-time Michael Phelps checked himself into an inpatient treatment center, as the depths of his depression left struggling with substance abuse and contemplating suicide.
He was coming off of his first retirement after the 2012 Olympics, when he announced he was stepping down from competitive swimming (he would go on to compete in the 2016 Olympics, win five gold medals and one silver, and then officially retire).
