Harvard researchers discover toxin in Juul pods that can cause longterm lung damage DYKOne Juul pod contains as much nicotine as a pack of cigarettes. Side effects include increased heart rate and blood pressure, lung disease, chronic bronchitis and insulin resistance leading to type 2 Under FDA pressure, Juul to halt sale of flavored e cigarette products in stores Juul agrees not to target children with vaping ads in $79 million Florida settlement