Non-Smokers too at Risk From Second-Hand Smoke

A ban on smoking in public places came into effect across India eight years ago — but India still remains home to 12 per cent of the worlds smokers and they with their second-hand smoke pose a threat to those who don’t smoke. Healthy non-smokers exposed to second-hand tobacco smoke are at an increased risk of developing coronary atherosclerosis, warns a senior cardiologist here, citing earlier findings which new studies have bolstered. Investigators have observed a dose-response relationship between second-hand smoke exposure and atherosclerosis as documented by CT angiography, said…

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Unknown Exposure To Second-Hand Smoke May Cause Early Death

US researchers have identified a new biomarker which revealed that known and unknown exposure to second-hand smoke may lead to an increased risk of mortality in non-smokers. Serum cotinine — a metabolite of nicotine — when used as a biological marker of exposure to second-hand smoke was found to have associations to overall and cause-specific mortality in non-smokers. Increased levels of serum cotinine in blood were significantly also associated with all types of cancers, and heart disease, the researchers said. “The study found that non-smokers are exposed to second-hand smoke…

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