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LETTERS: Smoking is the leading cause of preventable death the world over. However, even with the prevalence of alternatives to smoking, many are sceptical of their benefits and are wary of their long-term detriment.

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One of the concerns with using alternatives is the gateway effect that it may have on non-smokers.

Similar to how marijuana is considered a gateway drug, it is feared that alternatives to smoking, such as vapes and e-cigarettes, due to their pleasant flavour compared with cigarettes, will have the same effect on non-smokers.