John Hartigan, proprietor of Vapeology LA, a store selling electronic cigarettes and related items, takes a puff from an electronic cigarette in Los Angeles. Reed Saxon/AP hide caption

itoggle caption Reed Saxon/AP

Tobacco companies incorporated doctors in their ads, such as this 1930 Lucky Strike campaign, to convince the public that smoking wasn't harmful. Stanford University hide caption

itoggle caption Stanford University
Illustration by Daniel Horowitz for NPR

Californian State Assemblyman Richard Pan (center) is the author of legislation that would bar higher prices for health insurance sold to smokers. Rich Pedroncelli/AP hide caption

itoggle caption Rich Pedroncelli/AP
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Women smoke in New York City's Times Square. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images

A cigarette warning label image approved by the Food and Drug Administration. Food and Drug Administration hide caption

itoggle caption Food and Drug Administration