Three-time Olympic runner Suzy Favor Hamilton has written a book about her post-athletics foray into the world of high-priced escorts.
In "Fast Girl: A Life Spent Running from Madness," Hamilton chronicles her struggles with undiagnosed bipolar disorder that began in earnest after the 2000 Summer Games and eventually drove her into thrill-seeking behavior.
"My bipolar was driven toward sex," she told People magazine. "It could have been driven towards drugs and alcohol, or gambling. I found sex was the biggest high to fuel my mania, which is common with bipolar people."
Hamilton has a history of depression in her family.