In 2012, the former heavyweight champ decided to go vegan. He told Oprah, “Becoming a vegan gave me another opportunity to live a healthy life. “I was so congested from all the drugs and bad cocaine, I could hardly breathe, I had high blood pressure, was almost dying and had arthritis.” Becoming vegan, he said, made all that go away. We’re glad he discovered that plant foods can carry quite a punch!