tobacco regulatory science impact factor Observational studies of exposure to tobacco and nicotine products: Best practices Tobacco Regulatory Science (discontinued)

Although bidis are smaller and contain less tobacco than regular cigarettes, they contain a higher concentration of nicotine (21.2 mg/g) than either American Spirit cigarettes (17.6 mg/g) or regular cigarettes (16.3 mg/g)

The tobacco leaves were twisted and rolled, then spun into rope, which was wound into balls weighing as much as a hundred pounds (45 kilograms)

Don't let its position fool you - its just as powerful and long lasting as many of the other vapes in the list, its just a touch pricier, with a slightly smaller battery capacity - which dropped its position down to #8

One argument marijuana supporters have stood by for years - that weed is healthier than cigarettes - is now coming under fire