In this 11 Call For Action Alert, the American Heart Association wants stricter rules when it comes to e-cigarettes.
They especially want to change how they are marketed and prevent access to kids.
The AHA is concerned that e-cigarettes are another way for young people to get addicted to nicotine. And they say e-cigarettes should be a last resort if you're trying to quit smoking.
"Nicotine is still a drug and it is addictive, so I do believe there should be stricter regulations. Even though I enjoy it, I do believe there should be stricter regulations," said Laura Williams, who uses e-cigarettes.
"It's still kind of a cigarette because it still has tobacco and nicotine in it, so even though it doesn't have all the chemicals that cigarettes have, you're still getting that nicotine in your system," said Brittany Gillaspie, who wants tougher rules for e-cigarettes.
The AHA is calling for e-cigarettes to be held to the same laws that apply to other tobacco products, and they also want a ban on the more than 7,000 flavors that are now available.
The AHA believes there needs to be more research to see how e-cigarettes impact people's health, and in the meantime, they remain cautious about them.