A new study on the impact of Michigan's statewide smoking ban adds to mounting evidence that policies prohibiting tobacco smoking in workplaces and other public spaces may substantially improve public health by reducing heart disease and death, according to research presented at the American College of Cardiology's 63rd Annual Scientific Session.Studies on previous indoor smoking bans have consistently shown a major decrease in hospital admissions for heart attacks after smoke-free laws went into effect. Secondhand smoke exposure is associated with an estimated 50,000 deaths among U.S.

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