This narrative review synthesises current experimental, clinical, and epidemiological evidence examining the association between electronic cigarette use and erectile dysfunction, with emphasis on underlying biological mechanisms and key research gaps
Several factors might explain this: (1) the arithmetic tasks may have served as distractors reducing the effectiveness of the smoking cues, (2) the stressful version of the task might have elicited near maximal responses that were not further augmented by exposure to the smoking cues, (3) habituation to the video cues from baseline to phase 1 could not be ruled out, but this was considered unlikely as novel videos were presented at each session and the expected cue-induced responses re-emerged during the follow-up sessions
The important thing to stress is the amount in weight gain is very small between those who quit smoking versus those who continue to smoke. The bottom line: Studies that look at quitting smoking and weight gain have found about 16 percent of quitters actually lost weight, while 13 percent gained more than 10 kilograms, or more than 22 pounds
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A systematic review published in 2025 concluded that there is a potential association between the use of e-cigarettes and lung cancer, especially among those who use them alongside traditional cigarettes (so-called 'dual use')