Muhammad Ali, one of the most beloved international sports figures of all time, has remained active as a philanthropist and ambassador of peace since retiring from boxing in 1981. Amongst countless charitable acts, Muhammad has delivered medical supplies to Cuba, provided meals to the world’s hungry, and helped secure the release of U.S. hostages during the first Gulf War. Whether through the Muhammad Ali Center, which he co-founded with his wife, Lonnie Ali, or the Athletes for Hope not-for-profit organization, Muhammad has been a tireless advocate for Parkinson’s Disease and the healing potential of adult stem cell therapies.