FOUNTAIN HILLS, Arizona (CNN) - - There's no medical reason to prevent Sen. John McCain from being president, the doctor for the presumptive GOP nominee said in a statement the McCain campaign released Friday.
"At the present time, Sen. McCain enjoys excellent health and displays extraordinary energy," said Dr. John D. Eckstein, an internal medicine specialist at the Mayo Clinic who has treated the candidate for 16 years.
"While it is impossible to predict any person's future health, today I can find no medical reason or problems that would preclude Sen. McCain from fulfilling all the duties and obligations of president of the United States."
McCain, who turns 72 in August, would be the oldest person to be elected to a first term as president if he wins in November. He has been treated for skin cancer three times and was a prisoner of war in the Vietnam War for 5½ years.