FDA Wants Warning Label on E Cigarettes, Ban on Sales to Minors E cigarettes: 'cancer risk close to zero' Bhekisisa Aerosols from u cigarettes are at least as harmful as those from e cigarettes Inside UCR UC Riverside E cigarettes disrupt lung function, raise risk of infection One e cigarette with nicotine leads to adrenaline changes in nonsmokers' hearts UCLA Health Older users of e cigarettes at greater risk of respiratory illness, study suggests CUNY Graduate School of Public Health & Health Policy