Laws that prohibit smoking or guard against minors trying cigarettes do in fact prevent heart conditions that lead to heart attacks, reports Salon.
The most recent evidence supporting this notion is a study from Sao Paolo, Brazil, that found heart attack deaths dropped 12 percent after a smoke-free law was implemented.
Other studies in the U.S. have also found similar findings, particularly about second-hand smoking. Evidence also shows legislation has contributed to less medical conditions linked to smoking.
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