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Sitting for Prolonged Time Increases Risk for Lung Blood Clots

Hemera Technologies/Thinkstock(BOSTON) -- Sitting for long periods of time has already been associated with increased risk factors for cardiovascular disease, such as elevated cholesterol, increased BMI and waist circumference, and increased levels of biomarkers of inflammation. Now, add lung blood clots to the list.

In a study published Monday in the British Medical Journal, researchers at Massachusetts General Hospital analyzed medical records from almost 70,000 women who participated in the Nurses’ Health Study from 1990 to 2008 and found that those who sat for about six hours per day had more than double the risk of lung blood clots than women who sat for an average of two hours each day.

It is worth noting that the actual rate of lung blood clots increased from 0.04 percent in the most active women to 0.1 percent in the least active ones, making the actual risk of lung blood clots from sitting very, very small.

However, the authors still state that “interventions that decrease time sitting could lower the risk of pulmonary embolism [lung blood clots].”

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