Smoking-Ban Benefit Heart Heart attack rates have declined in cities that have banned smoking in public places.Example: After Pueblo, Colorado, banned smoking in restaurants, bars and other public places, the number of heart attacks decreased by almost 30%..Approximately 35,000 Americans die of heart disease that is caused by exposure to second-hand smoke. Want to Keep Reading? Continue reading with a Health Confidential membership. Sign up now Already have an account? Sign in