Smoking ban may shield Non-Smokers' blood vessels

This study looks at whether a ban on smoking in pubs, restaurants, and nightclubs improves blood vessel function in non-smoking workers who were regularly exposed to secondhand smoke. Researchers measure how well the brachial artery expands after a brief blood flow interruption, comparing workers exposed to smoke with those not exposed. The goal is to see if ending passive smoke exposure leads to healthier blood vessels and a lower risk of heart problems.