George W. Bush had heart surgery Aug. 6, 2013, to unblock an artery in his heart. The former president had no symptoms of heart disease before taking a stress test, which hinted at a problem, a spokesman said.

Jennie Garth said she has a leaky heart valve. "It sort of flutters open and shut," the "90210" star told "Access Hollywood." "It's weird because sometimes when I'm resting I can feel a little weird fluttering."

David Letterman had quintuple bypass surgery in January 2000. The emergency surgery took place the afternoon after a morning angiogram revealed severe blockages in the "Late Show" host's arteries.

Barbara Walters had aortic valve replacement surgery in May 2010. The veteran journalist and co-host of "The View" said doctors spotted the faulty valve during an echocardiogram.

Former "Live" co-host Regis Philbin had triple-bypass surgery in March 2007, telling viewers, "There's some plaque in some arteries, and I've got to get it cleaned out."

Alex Trebek suffered a mild heart attack in June 2012. The 72-year-old host of "Jeopardy!" had an earlier heart attack in 2007, which was also mild.

Dick Cheney received a heart transplant in March 2012 after surviving 20 months with a left ventricular assist device. The former vice president and longtime smoker suffered five heart attacks starting in 1978.

Ron Jeremy was hospitalized in January 2013 after an aneurysm developed near his heart. The 59-year-old porn star had surgery to repair the ballooning artery.

Bill Clinton had quadruple heart bypass surgery in September 2004 after his heart arteries were found to be 90 percent blocked. The former president has since adopted a vegan diet devoid of meat, dairy and eggs.

Larry King had quintuple bypass surgery in 1987 after suffering a major heart attack. The veteran journalist has since penned two books on heart disease titled, "Mr. King, You're Having a Heart Attack" and "Taking On Heart Disease."

Charlie Rose had open heart surgery in March 2006 to re-open a narrowing heart valve. The veteran talk show host returned to the airwaves three months later.

Actor Burt Reynolds had quintuple bypass surgery in February 2010. The operation was scheduled more than a month in advance.

Rosie O'Donnell said she chewed aspirin pills instead of calling 911 when she suffered a heart attack in August 2012. The 50-year-old comedian later told Dr. Oz, "It was the stupidest decision I ever made in my life."

Kelsey Grammer said his heart stopped beating after a heart attack in June 2008. "They had to blast me twice and get me started all over again," the actor told "Entertainment Tonight." "I did think: 'Oh gosh, I have got to hang on. I've got too much junk I've got to take care of."

Actor and comedian Robin Williams had surgery to replace a faulty heart valve in March 2009. Williams joked about his heart troubles in his comedy special, "Weapons of Self-Destruction."

Miley Cyrus said she has tachycardia – a faster than normal heart rate. "The type of tachycardia I have isn't dangerous," the 20-year-old singer wrote in her autobiography, "Miles to Go." "It won't hurt me, but it does bother me. There is never a time onstage when I'm not thinking about my heart."

Backstreet Boy Brian Littrell, left, was born with a heart murmur and had open heart surgery in 1998. Ten years later, Littrell's son Baylee was diagnosed with Kawasaki Disease, an inflammation of the arteries.

Poison frontman Bret Michaels had surgery to repair a hole in his heart in January 2011. The hole was discovered after the singer and reality TV star suffered a brain hemorrhage in 2010.

Grammy winner Toni Braxton was hospitalized with pericarditis in January 2008. The condition, in which the protective sac around the heart becomes inflamed, left the 45-year-old "Unbreak My Heart" singer with a lingering heart flutter.