Chemistry at work in e-liquids is still poorly understood, worrying researchers

A photo of a man filling his e-cigarette with e-juice

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New compounds with potentially harmful effects on the lungs can form from the mixture of flavours and solvents – even at room temperature

Studies on the chemical composition of e-cigarette liquids are raising concern that regulation is lagging behind the data.

The Yale Tobacco Center for Regulatory Science is a National Institute of Health and US Food and Drug Administration funded research group tasked with investigating the influence of flavours on tobacco addiction. Part of this work involves assessing the composition of e-cigarette liquids being sold to users.