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How maintaining a healthy weight and other lifestyle habits can help prevent this common heart rhythm disorder.

During a bout of atrial fibrillation, your heart may beat so rapidly, it may feel as though it's going to explode out of your chest. Commonly known as afib, this heart rhythm problem can leave you breathless and lightheaded—or cause no symptoms at all. About 9% of people ages 65 and older have afib, which raises the risk of stroke and other heart-related problems. But there are ways to lower your odds of developing afib—or to reduce its impact if you already have the condition.

Lessen your load

By far, the most important step you can take is to attain and stay at a healthy weight. "We have good evidence from multiple studies showing that people who are overweight have a higher risk of afib than people who are at a healthy weight," says Harvard professor of medicine Dr. Christine Albert, former director of the Center for Arrhythmia Prevention at Brigham and Women's Hospital. And the more you weigh, the higher your risk: people who are overweight have a 20% to 25% higher risk, whereas those who are obese (a body mass index, or BMI, of 30 or higher) have a 60% higher risk.

Want to improve heart health? New research based on blood samples from the original DASH diet shows the DASH diet and another diet high in fruits and veggies can lower measures of heart strain and heart muscle damage within eight weeks.

Prehabilitation aims to increase your strength and health before, not after, a medical procedure.

Rehabilitation can help get you up on your feet again after surgery or a physical setback. But some surgeons are increasingly turning to an innovative approach called prehabilitation in hopes of easing that recovery in the first place.

Prehabilitation, commonly called prehab, is an individualized medical program designed to help people � often those who are older or frail � better withstand and bounce back from an anticipated physically stressful event, such as surgery, says Dr. Julie K. Silver, an associate professor and associate chair of the Department of Physical Medicine and Rehabilitation at Harvard Medical School.

What you do before procedures can help get the best results.

If you're planning a complex medical procedure or surgery, you'll hear a lot about the steps you'll need to take afterward to speed up recovery and reduce complications. But it's equally important to focus on your health beforehand, too.

"Preparing both your body and mind before an invasive medical procedure can help you better manage and overcome the many stresses you encounter," says Dr. Julie Silver, associate chair for the department of Physical Medicine and Rehabilitation at Harvard Medical School. "If you are healthier and stronger going in, you have a much higher chance of avoiding setbacks."

Most diets can help you lose weight, but that weight is frequently regained within a few months — a fact supported by an analysis of more than 100 research trials on diets. But losing weight is easier, and more likely to be permanent, if you choose a diet with foods you actually like.

In the journals

Certain foods may trigger inflammation in the body that can increase a person's risk for colon cancer, suggests a study published online Jan. 18, 2018, by JAMA Oncology.

Researchers followed the diets of more than 121,000 people (46,800 of whom were men) for 26 years. Participants recorded what they ate, and their diets were scored based on the amount of foods consumed that are linked to inflammation, such as red and processed meats, sugary beverages, and refined grains.

Many people wonder if sugar substitutes are worth choosing, or are even safe. There may have a slight benefit for some, but there is also the potential for increased risk of diabetes.

Non-alcoholic fatty liver disease is the most common cause of liver disease in the United States, caused by the accumulation of fat in the liver. The key to preventing complications is to detect and treat it early, but getting a diagnosis can be tricky.

Most people with type 2 diabetes also have obesity. Weight-loss surgery has a positive impact on risk factors for heart disease, and a recent study found that this surgery significantly reduced the risk of death in people with obesity and diabetes.