E Cigarettes and Pregnancy Maternal Infant Health CDC Nonnicotine vapes may be marketed as safe, but many still contain chemicals, have unknown health effects, and aren't FDAregulated. Teens are using them more ofteneven alongside nicotine vapes. No ecigarette is risk free. The Harmful Health Effects of Vape Use Advanced DDS E Cigarettes and Lung Health American Lung Association Medical infograph. The infograph was developed by the Consumer Download Scientific Diagram