Sha’Carri Richardson, the 21-year-old American sprinter whose breakout victory in the 100-meter dash at the U.S. track and field Olympic trials in Oregon last month transformed her into an overnight star, posted a plaintive message on Twitter on Thursday afternoon: “I am human.”
What she was referring to became clear when news broke that the United States Anti-Doping Agency was suspending her for a month, after she tested positive for marijuana. Ms. Richardson says she used the drug after a reporter told her about the death of her biological mother. (Recreational marijuana is legal in the state of Oregon, where she was at the time.