
The C.D.C. said serious respiratory problems were reported in the past two months, though it remained unclear whether vaping nicotine or THC, the high-inducing chemical in marijuana, was the cause. SHEILA KAPLAN https://ift.tt/2ZiX8B9 https://ift.tt/2Hh3WJm The New York Times Health Cannabis Foods and Products, Marijuana, E-Cigarettes, your-feed-healthcare August 21, 2019 at 02:00AM
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