Is there a beneficial side to smoking?

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im doing this for my GCSE Biology case study and id like to know if anyone has any other views or information on this, at the moment there are a few reasons for beneficial smoking; Relieves stress helps asthma* can be used as a relaxation technique any other points or views are helpful :) thanks Jamie *helps with stress related asthma, and can also be subscribed which i found highly unbelievable but it is true haha :)*