Heart Health Archive

Insufficient sleep triggers a long list of physiological and hormonal changes that contribute to heart disease. For example, a lack of sleep can cause increases in blood pressure, blood sugar, inflammation, and weight. Doctors recommend getting at least seven hours of uninterrupted sleep per night. Strategies that promote better sleep include going to bed and waking up at the same time every day, creating a healthy sleep environment, and turning off electronics an hour before bedtime.

A 2025 study suggests that higher fitness levels may help protect people from developing atrial fibrillation.

A diet low in sodium and rich in plant-based foods promotes a diverse, balanced population of gut microbes, which may help people maintain a healthy blood pressure. A salty diet increases the prevalence of bad microbes and reduces the number of beneficial microbes. When bad microbes accumulate in the gut, they form breakdown products and toxins that promote inflammation. Beneficial microbes feed on fiber, which is why a diet that provides a mix of healthy fiber from plant-based foods helps. These microbes produce short-chain fatty acids, which interact with specific receptors on cells that help regulate blood pressure.

A free online tool that estimates your heart's age suggests that most adults have a heart that is older than their chronological age, according to a 2025 study.

Heart rate variability (HRV) is a measure of the tiny fluctuations in timing from one heartbeat to the next. Higher values are linked to better fitness levels and stress resilience.

A diet high in ultra-processed foods is linked to higher burden of fatty plaque in the carotid arteries, according to a 2025 study.

Eating two eggs per day doesn't appear to raise harmful LDL cholesterol, as long as people follow a diet low in saturated fat. Although eggs are high in cholesterol, dietary cholesterol doesn't have much of an effect on the amount in a person's bloodstream. But excess dietary saturated fat does raise blood cholesterol, which is why people should limit their saturated fat to 7% of their daily calories.

A 2025 study finds that smoking and high blood pressure are the two most important factors driving heart disease risk. Together with high cholesterol, excess weight (or being underweight), and diabetes, these five factors account for about 50% of the burden of cardiovascular disease. Compared to people with all five risk factors at age 50, those who had none of the factors were far less likely to develop cardiovascular disease or die early. On average, women with none of the risks at midlife lived 13 more years without heart disease, while men lived an additional 11 years.

Everyone should learn what to do if a heart attack or stroke occurs, beyond calling 911. It helps to become familiar with heart attack and stroke symptoms, so they can be recognized. It's also important to speak with one's own doctor in advance, to find out if he or she advises taking an aspirin in one of those emergencies. Other precautions include keeping emergency contact and medication lists updated and handy, and talking about emergency plans with family and friends, especially one's health care proxy.

Obesity is a common, chronic disease that can harm the heart. The powerful weight-loss medications known as GLP-1s, semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound), are now recommended as first-line therapy for eligible people, according to the American College of Cardiology. People using these drugs should work with a dietitian or nutritionist who can help them create a personalized eating plan that ensures they're getting enough nutrients while minimizing common side effects.