According to a 2006 article in The Washington Post, Sipple went through a period of estrangement with his parents, but the family later reconciled with him. Sipple's brother, George, told the newspaper, "[Our parents] accepted it. That was all. They didn't like it, but they still accepted. He was welcomed. Only thing was: Don't bring a lot of your friends."
Sipple's mental and physical health sharply declined over the years. He drank heavily, gained weight to 300 lb (140 kg), was fitted with a pacemaker, and became paranoid and suicidal. The incident brought him so much attention that, later in life, while drinking, he would express regret towards grabbing Moore's gun. Sipple had been diagnosed with paranoid schizophrenia according to the coroner's report. On February 2, 1989, he was found dead in his bed, at the age of 47.
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