Biden in good health

Joe Biden, the Democratic vice presidential nominee, released medical records today that appear to show he is in very good health for a 65-year-old man.

And while there's no reason for concern about another aneurysm -- he has no symptoms, seems to have healthy heart arteries, and is active -- there's no evidence that he has had a brain scan to rule out completely another aneurysm like the one that required emergency lifesaving surgery 20 years ago, the Associated Press reports.

Biden also has an enlarged prostate but no sign of prostate cancer. He takes the statin drug Zocor to keep his cholesterol in the healthy range, and his blood pressure is a good 120 over 78.

The health of the presidential candidates and their running mates has been in sharper focus this election because Republican presidential nominee John McCain has had three bouts of melanoma and, if elected, would be at age 72 the oldest ever elected to a first term.

McCain's doctors declared him fit to serve as president in May. So did Barack Obama's personal physician. McCain's running mate Sarah Palin has not released her medical records. The New York Times reported this morning that "serious gaps" remain in voters' knowledge of the candidates' health.