Toxicity, Chemistry, and Public Health Relevance of Emerging Nicotine Analog Vapes, Pods, and Pouches Chemical Research in Toxicology E Cigarettes and Vaping OHSU E Cigarettes and Pregnancy Maternal Infant Health CDC Global youth vaping and respiratory health: epidemiology, interventions, and policies npj Primary Care Respiratory Medicine Electronic Nicotine Delivery Systems (ENDS), including e cigarettes and vapes, are often perceived as a safer alternative to traditional tobacco. But is the evidence really supporting this belief? A recent umbrella review published