In order to reap the health benefits associated with exercise, you may need to change the intensity of your workouts.

The heart is a tough muscle, but stress can take a real toll. After years of stress, that tough muscle may become more vulnerable to disease or heart attack.

Nitrous oxide, better known as laughing gas, has been used as an anesthetic during surgery since the 19th century. Though it is widely used to this day, some studies linking it to a risk of heart attack have questioned its safety.

Actor James Gandolfini died from a heart attack at age 51 Wednesday while in Italy, according to his managers and HBO. HBO broadcast "The Sopranos," in which Gandolfini starred as Tony Soprano.

Your abdominal aorta supplies blood to all major abdominal organs and the legs. If it becomes blocked, not only may organs and legs suffer, it can be a harbinger of a future heart attack. Spotting such blockage can warn doctors of this risk in their patients.

Millions take diclofenac to relieve the pain of arthritis and other ailments. The European Medicines Agency, however, has issued a warning that this medication may raise heart attack risk.

Not getting enough oxygen during sleep can cause problems. This is the situation for many untreated sleep apnea patients. And one of those problems could affect the heart.

The dementia associated with Alzheimer’s disease cannot be cured, but medication is available to improve the ability to think and remember.

For heart attack patients, getting post-traumatic stress disorder is fairly common. Those with PTSD are also likely to have another cardiac event, and sleep troubles may play a role.

Many heart attack and heart failure patients think they’re out of the woods after they’ve left the hospital for a month or more. But readmission rates are still high.