Donald Trump's running mate has released a letter from his doctor summarizing his medical history and results of a July physical exam.

Mike Pence's doctor writes that the 57-year-old Pence is in "excellent general and cardiovascular health." Dr. Michael Busk says Pence has a healthy lifestyle and can maintain his "high level of professional work" and physical activity programs "without limitations."

The doctor also says that Pence had basal cell carcinomas -- skin cancer -- removed from his face in 2002 and 2010. He also had surgery in August 2015 to repair a hernia.

The doctor says the only medication Pence takes is Claritin for seasonal allergies. He does not smoke or drink alcohol, has diet-controlled heartburn and exercises four times a week.