Nitric oxide is a chemical compound in the body that relaxes the blood vessels and keeps them flexible, allowing them to dilate, boosting blood flow, and helping to control blood pressure. It also has anti-inflammatory effects and helps reduce the risk of plaque development. But too much nitric oxide can be harmful. Here's the best way to maintain a heart-healthy level.
Most people with abnormal heart rhythms (atrial fibrillation or ventricular arrhythmias) can safely consume coffee and other caffeinated beverages in moderation—despite the common concern that caffeine can trigger arrhythmias—a recent study finds.
Emotional or physical stress can trigger worrisome symptoms that are similar to those of a heart attack. Here's what you need to know about this condition, known medically as stress cardiomyopathy.
The American Heart Association (AHA) continues to recommend eating two 3.5-ounce (100 grams) servings of cooked fish each week to reduce cardiovascular disease risk. But is mercury a concern, and what should you do if you don't like fish?
While low-fat diets were once all the rage, they are no longer considered a heart-healthy choice. In fact, when you cut saturated fat, such as that in meat and butter, out of your diet, you should replace it with the healthier fats found in vegetable oils, nuts, and fish. A presidential advisory from the American Heart Association drives that point home.
Researchers have found that sugar impacts heart health in several key areas. Here's a sprinkling of recent research.
Some adults ages 75 and older wait far too long before seeking medical help for heart attack symptoms. Here's why the delay could put their health—and life—in jeopardy.
An interesting diet study was published earlier this year, this one from Italy, comparing a Mediterranean diet with a lacto-ovo-vegetarian diet. Both diets are widely promoted as being healthful, and previous research has shown that each can improve aspects of cardiovascular health and help with weight control, but no clinical trial has compared them until now.
A recent study from UK researchers proposes screening adults for atrial fibrillation every five years, starting at age 65. Here's why.
When cardiac arrest strikes, quick action from a bystander can have a lasting impact, research shows.
That's the question cardiologists are asking after a study suggests stents may not be as useful as once thought.
Snoring loudly enough to wake members of your household is one sign that you have sleep apnea—a disorder that repeatedly interrupts your breathing throughout the night. These breathing disruptions can leave you groggy the next day, but they also pose serious risks to your heart. Using a continuous positive airway pressure (CPAP) machine at night—while an established and effective fix for sleep apnea—might not help you avoid a heart attack or stroke as previously thought, new research finds.
Two analyses have added support to the heart benefits of whole grains.
If you knew you were at high risk for a stroke and that a drug might be able to prevent it, would you take that medicine?
A study in the Journal of the American College of Cardiology suggests that a coronary calcium scan can help people at intermediate risk of coronary artery disease (CAD) decide whether to start statin therapy.