Brisk walking linked to a lower risk of abnormal heart rhythms
A 2025 study found that people who walk at an average or brisk pace (3 or more miles per hour) were less likely to develop abnormal heart rhythms than people who walk more slowly.
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Second-guessing symptoms
While many health symptoms resolve quickly on their own, others linger and make people wonder if they need to see a doctor. Symptoms that warrant a doctor’s visit include drawn-out cold symptoms such as fatigue, cough, and low-grade fever; a fever lasting more than four days; unexpected symptoms when starting a new medication or after surgery; certain digestive problems; and new or worsening mental health issues.
Healthy Feet
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Hemoglobin A1c (HbA1c): What to know if you have diabetes or prediabetes or are at risk for these conditions
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Alzheimer’s Disease
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Healthy Hands
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Take Control of Your Blood Pressure
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Heart-healthy dinner ideas from Harvard doctors
A healthy diet is a proven and powerful way to lower your risk of heart disease. Since dinner is often the main meal of the day, it’s a good time to feature foods that support cardiovascular health. Four Harvard physicians share their favorite healthy dinners, which focus on lean protein (such as tofu, fish, and chicken) and a variety of vegetables.
Avocado nutrition: Health benefits and easy recipes
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What can magnesium do for you and how much do you need?
Magnesium is a mineral the human body needs to function properly — especially for a healthy cardiovascular system, nerves, muscles, and bones — though the benefits of supplements are largely oversold. While most people get enough magnesium from their diet, in certain instances people should take a supplement.