RENO, Nev.  Gov. Sarah Palin, 44, is in excellent health and has had no major medical problems, according to a two-page, seven-paragraph letter by her doctor released late Monday night.

The letter is the first information the Palin campaign has provided about her medical history. The release of medical records is common practice for presidential and vice-presidential candidates, but earlier this month, Ms. Palin, the Republican nominee for vice president, declined to provide any health information or be interviewed about her medical history.

She retreated from that position on Oct. 22 in an interview with Brian Williams of NBC News. “If that will allow some curiosity seekers, perhaps, to have one more thing that they can either check the box off, that they can find something to criticize, perhaps, or to rest them assured over, fine,” Ms. Palin said.