While the protective mechanism is still unclear, marriage is associated with a lower risk of heart problems as well as less cardiovascular trouble involving the neck, abdomen and legs, according to a large new study discussed at the American College of Cardiology Scientific Session. The analysis of data from more than 3.5 million participants ages 21 to 102 revealed that married men and women had a 5% lower risk of vascular disease, researchers said. "It's such a large population that you can't cast this study off," said Dr. J. Jeffrey Marshall, SCAI past president.

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