The FDA says the rules are aimed at improving public safety and curbing teen use, but vape shops say they'll kill the industry.

The rules mean electronic cigarettes will be regulated in the same way as traditional tobacco products.

Public health advocates told an Indiana legislative committee there's no scientific consensus on whether electronic cigarettes pose any health risks even as a growing number of youths are trying them.

Almost 25 percent of the Hoosier 12th grade respondents say they had used the handheld electronic devices that vaporize liquid nicotine solution in the last month. That's higher than the national average of 17 percent.