Exercise & Fitness Archive

In the journals

People with heart disease also have a higher risk of developing cancer, according to research presented at the American Heart Association's Scientific Sessions in November 2019.

Researchers evaluated data from 12,712 people from the Framingham Heart Study who did not have heart disease or cancer at the study's launch. They used a risk estimator that predicts a person's chance for getting heart disease within 10 years.

An increasing body of research shows that dog ownership may boost heart health.

Looking to improve your heart health? You might want to think about getting a dog.

A growing body of scientific research suggests that having a canine companion is associated with number of health benefits, including improved cardiovascular health. "Numerous studies from Scandinavia, England and the United States suggest that dog owners have better health than individuals who don't own dogs. But what we really want to know is whether owning dogs produces better health or if it just means that healthier individuals are more likely to own dogs," says Dr. Dhruv Satish Kazi, a cardiologist and associate director of the Smith Center of Outcomes Research at Beth Israel Deaconess Medical Center and a member of the faculty of medicine at Harvard Medical School.

Ask the doctors

Q. I've heard a lot recently about inflammation being a health risk, but I'm not sure I really understand what it is. Can you explain?

A. When people talk about inflammation, they're actually talking about your immune system's response to a perceived injury or infection. When you're injured, this inflammation is actually a good thing. The area you injured will become red and swell as an army of beneficial white blood cells flow in to fight infection and help you heal. The same response occurs in other parts of your body when you encounter a virus or infection. But sometimes this immune response occurs when it shouldn't. It can be triggered, for example, when you are exposed to toxins, and by other causes such as chronic stress, obesity, and autoimmune disorders. In these cases, instead of moving in, healing the problem, and then returning to normal, the inflammation persists over time. It's thought that this chronic state of inflammation can lead to numerous health problems, including heart disease, arthritis, depression, Alzheimer's disease, and even cancer.

To help stave off cardiovascular disease, you may not need to run very far, very fast—or even very frequently.

Jogging and running rank among the most popular forms of exercise in this country. But how fast and how long do you need to run to reap the cardiovascular rewards of this activity? A recent study suggests that for both questions, the answer may be less than you think (see "The latest research on jogging and running").

"The main takeaway message is that running even just once a week seems to offer some cardiovascular benefits," says Dr. Adam Tenforde, director of the Running Medicine Program at Harvard-affiliated Spaulding Rehabilitation Hospital. It's heartening news for people who enjoy running but can't do it more frequently, either for logistical reasons or health issues such as knee arthritis, he adds. These findings might also inspire people who do brisk walking to add a few minutes of running to their exercise regimen.

Following five healthy lifestyle habits has been shown to extend life expectancy. Better still, a recent study suggests the added years are more likely to be free of illness or disease.

There is a lot you can do to lower your chances of having a stroke. Even if you've already had a stroke or TIA ("mini-stroke"), you can take steps to prevent another.

Controlling your weight is an important way to lower stroke risk. Excess pounds strain the entire circulatory system and can lead to other health conditions, including high blood pressure, diabetes, high cholesterol, and obstructive sleep apnea. But losing as little as 5% to 10% of your starting weight can lower your blood pressure and other stroke risk factors.

Lifestyle changes have been shown to reduce the risk of a cardiovascular event, but can they also help those with diabetes? A recent study found a positive association between healthy lifestyle choices and reduced cardiovascular risk for those with type 2 diabetes.

Exercises that promote strength and flexibility can help you improve your stance over time.

Chances are you do a lot to sabotage your posture during the course of an average day: reading a good book with your head down, sitting at a computer, or scrolling on your phone.

Activities like these can get your body in the habit of hunching or slouching. Over time this may lead to physical changes that make it harder to stand up straight and cause a curvature in your upper back, which doctors refer to as kyphosis.

Research we're watching

People who run — even in small amounts — are less likely to die during a given period compared with those who don't run, according to an analysis published online Nov. 4, 2019, by the British Journal of Sports Medicine. The benefit appears even among people who run for less than 50 minutes once a week, at speeds below 6 mph.

Researchers began their review of 14 studies, involving more than 200,000 people, in hopes of determining whether running can stave off deaths from heart disease, cancer, and other causes. They also sought to find out how much running people need to do to benefit. The studies tracked participants for periods ranging from five-and-a-half to 35 years. Over the course of these studies, 25,951 of the participants died. When comparing those people to those who lived until the end of the study, the researchers found that people who ran, no matter the amount, were 27% less likely than nonrunners to die from any cause during the study period. Runners also had a 30% lower death rate from cardiovascular disease and a 23% lower death rate from cancer. While running was linked with longer life and less disease in these studies, this doesn't necessarily prove that it was the running that actually caused better health. But the results suggest that lacing up those sneakers and going for a quick jog might improve your health.

Research we're watching

People living in rural areas of the country appear to be more likely to die from preventable causes compared with people in more urban locations, says a CDC report. The report looked at deaths from 2010 to 2017 and found that people in rural locations were more likely to die from preventable conditions, including cancers and heart and respiratory diseases. In 2010, about 29% of cancer deaths in rural areas were potentially preventable, compared with 18% of cancer deaths in urban areas. In addition, 45% of heart disease deaths in rural locations were deemed preventable, compared with 24% of heart disease deaths in urban areas. The authors suggested several strategies to reduce disparities, including better screening programs and initiatives to encourage better eating and exercise habits, as well as smoking cessation.

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