Canadian sprinter Ben Johnson suffered side effects...

Canadian sprinter Ben Johnson suffered side effects associated with steroid use 19 months ago, including breast enlargement and insomnia, his family doctor said.

Testifying in Toronto as part of a Canadian inquiry into drugs and sports, Dr. Jack Sussman said he had been baffled by tremendous muscle development in Johnson, who had first visited him as a scrawny Jamaican immigrant in 1979. Johnson was stripped of an Olympic gold medal when steroids were found in his urine last fall at the Seoul Games.

Referring to medical charts throughout his testimony, Sussman said he had suspected that Johnson was on banned muscle-building drugs in October of 1987, when the sprinter’s left breast grew unnaturally large.

The condition is one of the less serious side effects of steroid use. But Sussman said that when he asked Johnson directly, he denied using steroids.