John Kanzius made his fortune owning radio stations in Pennsylvania, then retired with his wife to Florida. Five years ago, he was diagnosed with leukemia.
While he was undergoing chemotherapy he decided there has to be a better way to fight this illness. And even though he wasn't a doctor, he figured he could figure it out himself.
Kanzius said he was inspired to invent his cancer-fighting machine after seeing the children who were getting chemotherapy at the same time he was. "I noticed young kids losing their smiles, losing their hair. And I said to myself, 'Today's chemotherapy is cruel. There's gotta be a better way to cure cancer,'" Kanzius told ABC News. (ABC)