A man walks past an advertisement for e-cigarettes in New York

A man walks past an advertisement for e-cigarettes in New York April 24, 2014. The Food and Drug Administration proposed rules on Thursday that would ban the sale of e-cigarettes to anyone under 18 but would not restrict flavored products, online sales or advertising, which public health advocates say attract children. The long-awaited proposal would subject the $2 billion e-cigarette industry to federal regulation for the first time. REUTERS/Lucas Jackson (UNITED STATES – Tags: HEALTH)