Bans on smoking in public places have had a bigger impact on preventing heart attacks than ever expected, data shows.
Smoking bans cut the number of heart attacks in Europe and North America by up to a third, two studies report. [….]
His team found that heart attack rates across Europe and North America started to drop immediately following implementation of anti-smoking laws, reaching 17% after one year, then continuing to decline over time, with a 36% drop three years after enacting the restrictions.
– from BBC, Smoking Bans Cuts Heart Attacks
Simple changes can have big effects….