John McCain appears cancer-free and healthy for his age, according to eight years of medical records released by the presumptive GOP nominee's campaign Friday.

The three-time melanoma survivor turns 72 in August and if elected would be the oldest first-term president in history.

McCain remains at risk for developing new skin cancers, and gets a thorough check by a Mayo Clinic dermatologist every few months. But the Arizona senator's medical records could help dispel immediate concerns about his health.

"At the present time, Senator McCain enjoys excellent health and displays extraordinary energy," John D. Eckstein, his personal physician at the Mayo Clinic, said in a statement. "While it is impossible to predict any person's future health, today I can find no medical reason or problems that would preclude Senator McCain from fulfilling all the duties and obligations of President of the United States."

The details of McCain's health are contained in 1,173 pages of medical documents spanning 2000 to 2008.

They show he currently takes medication for cholesterol, kidney stones and allergies.

"Over 1,000 pages show the man is in excellent health," said FOX News medical contributor Marc Siegel, adding that McCain should still watch his diet and his cholesterol.

McCain's most recent exams show a range of health issues common in aging: He frequently has precancerous skin lesions removed, and in February had an early stage squamous cell carcinoma, an easily cured skin cancer, removed. He had benign colon growths called polyps taken out during a routine colonoscopy in March.

"I do not see any worrisome lesions," Dr. Suzanne Connolly concluded after McCain's most recent exam, on May 12.

It is McCain's three bouts of melanoma, the most dangerous form of skin cancer, that raise the biggest health concerns. He has had four separate spots of melanoma removed from his head and arm on three occasions -- in 1993, 2000 and 2002. Three spots were very early stage, when they were in the uppermost skin surface and easily cut out.

But one, on his left temple in 2000, was invasive melanoma, what doctors call an "intermediate risk" melanoma because of its thickness -- 2.2 millimeters. McCain required delicate surgery to remove and examine lymph nodes that showed no sign of spread.

"We don't have a crystal ball, but we have no way to say anything at the present time would preclude him from running for office," said dermatologist Connolly.

The 10-year survival rate for that intermediate melanoma is 65 percent, said Dr. Stuart Lessin, director of the melanoma risk-assessment program at Philadelphia's Fox Chase Cancer Center, who was not involved in McCain's care.

"He's not cured," Lessin said. Still, the biggest risk of recurrence is in the first few years, so at eight years out, the chances of melanoma returning at that spot and killing him is "in the single digits," he added. "He's pretty much out of the woods."

But every bout of cancer increases the risk of another new cancer. Given McCain's fair skin and history of sunburns, mostly from the 5 1/2 years he was held outdoors while in Vietnamese prison camps, he has a 5 percent to 8 percent chance of developing a fifth melanoma, Lessin calculated. Good checkups, however, mean any future melanoma should be caught in time to treat successfully, he said.

The Vietnam veteran has degenerative arthritis from war injuries that might mean a future joint replacement. His blood pressure and weight were healthy, and his cholesterol good but not optimal -- and he switched medication from the controversial Vytorin that made headlines this past winter to a proven standby, simvastatin.

His likely Democratic rival, Barack Obama, will be 47 in August. Obama, lean and agile and a frequent basketball player, says he has quit smoking. Neither he nor Democratic opponent Hillary Rodham Clinton has released health records.

Though most voters say McCain's age would not affect their decision in November, it still lingers on some voters' minds.

In a FOX News poll taken in late April, 22 percent of those surveyed said McCain's age would be enough to discourage them from voting for him. Seventy-seven percent said it made no difference.

McCain has shrugged off the issue by highlighting his stamina and strong genes. He has recalled his "rim-to-rim" Grand Canyon hike in 2006; he has campaigned with his energetic mother, age 96. He was a two-pack-a-day smoker until quitting in 1980.

Eckstein lauded McCain's performance on a heart stress test -- sweating it out for 10 minutes when Eckstein routinely sees patients decades younger quit at five or seven minutes.

During his first presidential run, eight years ago, McCain disclosed hundreds of pages of records to reporters as he sought then to counter what aides called a "whisper campaign" questioning his mental fitness. In those records, medical personnel concluded that his years in prison, including solitary confinement, left him with no psychological wounds. Aides said McCain has had no mental evaluations in the past eight years and none was included in the documents.

The documents include very personal details, such as the fact that he had earwax removed earlier this year and the dermatologist showed McCain's wife, Cindy, how to monitor possibly suspicious skin spots hidden by his waistband. Though he's known as temperamental, the doctors made a point of repeatedly writing in the documents that McCain was "pleasant."

Also revealed: He has occasional momentary episodes of dizziness, when he gets up suddenly. McCain first told a doctor about them in 2000 -- a visit that also uncovered the melanoma -- and intense testing concluded they were harmless vertigo. He didn't report any episodes at his most recent exam.

The Associated Press contributed to this report.