Mayo Clinic Videos
Sen. John McCain diagnosed with brain tumor
McCain, 80, was found to have a brain tumor known as a glioblastoma after undergoing a procedure to remove a blood clot near his left eye, according to a statement from Mayo Clinic Hospital in Phoenix.
Democrats, Republicans send well wishes to Sen. McCain
Lawmakers spoke publicly and took to Twitter following his brain tumor announcement.
Sen. John McCain battling brain cancer
ABC News' Amna Nawaz reports on the senator's being diagnosed with a rare and aggressive form of brain cancer.
2009 town hall: President Obama answers America's questions
President Obama sat down with Americans to answer questions about health care in the ABC special "Questions for the President: Prescription for America."
Inside the strength and effectiveness of SPF
Dermatologists encourage doubling up on the amount of sunscreen you use despite the number on the SPF label.
New warning involving teenagers and caffeine
A 16-year-old student collapsed and died after consuming too much caffeine.
'Superman' visits tiny cancer patient at hospital window
Kendal Breyfogle received a special visit to the window of her third-floor hospital room at the Mayo Clinic in Rochester, Minnesota, on April 27,
President-Elect Trump's Full Press Conference
Donald Trump answered questions about his businesses and unsubstantiated allegations that Russia is in possession of personal and financial information about him.
Trump to Nominate David Shulkin for Secretary of Veterans Affairs
President-elect Donald Trump says he intends to nominate David Shulkin to be secretary of the U.S. Department of Veterans Affairs.
FDA Issues New Guidelines to Prevent Pacemaker Hacking
The "GMA" team of insiders analyzes some of the biggest stories trending this morning.