Is vaping more harmful than smoking cigarettes? More people incorrectly think so: Newsroom UT Southwestern, Dallas, Texas Older users of e cigarettes at greater risk of respiratory illness, study suggests CUNY Graduate School of Public Health & Health Policy American Heart Association: Vaping Combined With Smoking Is Likely As Harmful as Smoking Cigarettes Alone WHO warning on vaping draws harsh response from U.K. researchers Science AAAS