Green apple flavor in vapes enhances nicotine reward

A common green apple vape flavor enhances nicotine reward and is also rewarding itself, according to research in mice recently published in eNeuro.

Vaping entices adolescents into nicotine use with fun flavors like green apple and cotton candy. Nicotine-free flavored vapes have also gained popularity. But of the over 7000 available flavor chemicals, only a handful have been studied. With or without nicotine, flavored vapes pose potential risks for the brain, including addiction.

To continue unraveling these risks, Cooper et al. gave mice either nicotine, the green apple flavorant farnesene, or both in one chamber and a saline solution in another. Farnesene was rewarding by itself, as mice chose the farnesene chamber over the saline chamber. But farnesene also enhanced reward when combined with nicotine.

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