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Compared with brisk walking, swimming allows you to meet your fitness goals with less stress on your joints and muscles.

In terms of convenience, it's hard to beat brisk walking as a form of exercise. You don't need any special equipment or venue, and most people can do it. But for some people—such as those with achy knees, sore hips, or substantial weight—walking may be uncomfortable. And during the winter, harsh weather in many parts of the country can make walking outdoors unpleasant—even treacherous at times. A water workout in a warm indoor pool, followed by a relaxing sauna could be an appealing alternative that's also good for your heart.

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Cardiologists expect wider use of the less-invasive technique—known as TAVR—in the near future.

The one-way valve inside your aorta opens to allow blood to surge from the heart to the rest of your body. But as you age, the valve's leaflets may stiffen and become clogged with calcium deposits, restricting blood flow. About 12% of people ages 75 or older have this condition, known as aortic stenosis. Symptoms include feeling dizzy, faint, tired, and breathless. Unless the valve is replaced, half of people with symptoms from aortic stenosis die within two years.

Research we're watching

Even if you're not overweight, having a large belly raises your risk of dying of heart disease, a new study suggests.

To explore factors linked to early death, researchers relied on body measurements and other health information gleaned from more than 15,000 adults who took part in a national health survey. The average follow-up period was 14 years.

Research we're watching

Older adults can reap greater heart benefits from a daily stroll if they pick up the pace a bit, a study in the Nov. 4, 2015, Circulation reports.

Most exercise studies include predominantly younger adults. This new study is an exception. Researchers followed more than 4,200 people—whose average age was 73—for 10 years. They gathered information about the participants' health and their physical activity.

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Research we're watching

Many people know what they need to do to keep their hearts healthy. The challenge is making changes (like exercising regularly and eating more fruits and vegetables) and sticking with them. New research suggests monthly meetings with a group of peers who offer support and encouragement can help.

The study included 543 adults with at least one risk factor for heart disease (being overweight, smoking, being physically inactive, or having high blood pressure). Half were randomly assigned to a self-management control group. The others were placed in teams of 10 for the peer-group interventions. Two peer-elected trained leaders headed each group meeting, which involved role-play, brainstorming, and activities to address emotions, diet, and exercise. The groups met for 60 to 90 minutes monthly for one year.

Coffee is nearly a national obsession in the United States. For years, experts have debated whether drinking coffee is good for you. Recently published research suggests that regular, moderate coffee consumption is associated with a lower risk of overall mortality, and that heavy consumption of coffee isn’t linked with a greater risk of death.

Many people practice meditation in hopes of staving off stress and its related health problems, including heart disease. While some studies of meditation haven't been the most scientifically rigorous, other research strongly suggests that this ancient, mind-calming practice can actually help lower blood pressure � and that it may offer other benefits for the entire cardiovascular system.

"The evidence that chronic stress is pretty toxic for the cardiovascular system is mounting," says Dr. Laura Kubzansky, a professor of social and behavior science at the Harvard T.H. Chan School of Public Health.

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You get the most bang for your buck from keeping blood pressure in the normal range, but don't skip the other things.

Many tasks are required to run a household. There are groceries to shop for, broken things to fix, and windows to wash. But you need to prioritize: it makes no sense to worry about the weeds in the garden if the mortgage payment is overdue.