Secondhand smoke could boost stroke risk

It's been known for years that secondhand smoke can lead to heart and lung problems in people who live with smokers. Now researchers are discovering it could increase their risk of stroke.

The study, published in the American Journal of Preventive Medicine, looked at thousands of spouses and their health records. Statistics showed people married to smokers had a 42 percent increase of having a stroke. That risk increased to 72 percent if the spouse was a former smoker.

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