In January 2002, Heenan announced that he had
throat cancer.
[2] Heenan later recovered from throat cancer, but lost a great deal of weight, dramatically changing his appearance and voice. Following early treatments, he spoke in a soft, high-pitched tone which contrasts noticeably with the tone fans were accustomed to hearing him use as a color commentator. He went from 231 pounds (105 kg) to 190 pounds (86 kg) or even less.
In December 2007, Heenan had reconstructive surgery on his jaw, after the first surgery was unsuccessful. He was placed in a medically-induced coma and was slowly brought out.
[19] In the second half of January 2008, he had come out of his medically induced coma. Though not yet able to speak, he was communicating with his eyes. He had several more surgeries to reconstruct facial features. In October 2008, it was reported that he was able to speak a few sentences before getting tired. In February 2009, it was reported that he was still relearning how to speak clearly and out of the hospital.
On December 11, 2009, Heenan was hospitalized at the H. Lee Moffitt Cancer Center in Tampa, FL after an examination of his rebuilt jaw found an infection that needed to be treated. By 2010, his jaw infection was completely eradicated. In 2011, he broke a hip and his pelvis in a fall and recovered within a few months.
According to an interview given by
Jim Ross in October 2013, Heenan was "hanging in there" and continuing to have trouble speaking as a result of tongue cancer treatments.
[20] In April 2014, while in Las Vegas attending a wedding, he fell out of bed and broke a shoulder and in May 2016, he suffered another fall and broke a hip