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When they increase the consumption of something, they decrease the consumption of other things, said Dr Ashkan.

Cancer can also develop in the bones of the mouth

Aerosols and particles produced by vaping are composed of water, propylene glycol, vegetable glycerin, and nicotine

Earlier research found that nearly two-thirds of JUUL users between the ages of 15 and 21 were not aware the product always contains nicotine

The labelling of tar, nicotine and carbon monoxide levels will also be revised as the government said this information was based on machine testing which gave different levels to those smokers actually inhale.