39. Michael Phelps Has ADHD
Michael Phelps made waves as an Olympic swimmer when he became the most decorated Olympian of all time, with 28 medals. He also holds the record for Olympic gold medals. At several Olympics, he dominated the swimming competitions.
All this while, he was dealing with ADHD, a disorder that can affect adults as much as it does children. Phelps has used his immense success to advocate for people to strive to accomplish all that they can, with or without mental illness. He has also helped erode the stigma around adult ADHD and encouraged people living with it to seek treatment.