We've known for a while that sitting is the new smoking, and many of us sit around using our smartphones quite often these days.
A new study presented at the American College of Cardiology Latin America Conference links substantial smartphone use with higher obesity risk. The exact number of hours now linked to this danger is five hours a day. You may not think that you spend that much time on your phone. But with computers, tablets and TV, it can really all add up.
Those who got five hours of smartphone time a day were 43 percent more likely to be obese than those that spent less than this amount. It's not the phones themselves, but it's that it facilitates sedentary behaviors and cuts into time where you might get off the couch and get moving.
Sedentary lifestyles have now been linked to heart problems, higher stroke risk and diabetes. There is also some evidence that getting on electronic devices gets you into a trancelike state, which some researchers say can drop your metabolic rate to lower than when you are sleeping.
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