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Study: Commuting More Than 15 Miles Linked to Obesity, Belly Fat, High Blood Pressure, and Less Exercise

May 8, 2012 -- A long commute may pave the way to poor health, a new study shows.

The study found that people who commuted more than 15 miles to work each day were more likely to be obese and to carry a lot of fat around the belly -- where it's especially bad for the heart -- and less likely to get enough exercise compared to those who drove less than 5 miles to work each day. Workers who drove more than 10 miles each day also tended to have high blood pressure.

"You are on your way to heart disease. You have an elevated blood pressure, an elevated BMI, an elevated waist circumference; you're on your way to diabetes and high cholesterol," says Suzanne Steinbaum, DO, a preventive cardiologist at Lenox Hill Hospital in New York City.

"This is a person that I say, 'Change your life now so you don't get sick later,'" Steinbaum says.

The study, which is published in the American Journal of Preventive Medicine, included more than 4,200 adults who commuted to work in two Texas cities.

Researchers used satellite tracking to map the shortest road routes between workers' homes and offices.

Everyone in the study took a treadmill test to measure how long and vigorously they could exercise. And researchers checked a slew of indicators for heart disease and diabetes. Those included blood sugar levels, cholesterol, total fat, belly fat, and body mass index (BMI) -- a measure of weight in relation to height. People in the study were also asked how much and how intensely they exercised each week.

"The study is the first to show that long commutes can take away from exercise and are associated with higher weight, lower fitness levels, and higher blood pressure. And all of these are strong predictors of [heart] disease, diabetes, and some cancers," says researcher Christine M. Hoehner, PhD, MSPH, an assistant professor of public health sciences at Washington University School of Medicine in St. Louis.

Commutes Lead to Bad Habits?

The study can't prove that commutes cause those problems directly. It could be that people who have long commutes are simply also more likely to engage in other behaviors that put them at risk for weight gain and inactivity.

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