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2. Smoking

Smoking

Smoking

Cigarettes contain nicotine that makes brain function deteriorating faster . It is because nicotine can cause vasoconstriction. Reduction in blood flow to the skin makes the smokers look much older than their actual age. Yet, this is not the worst part. The reduction of blood supply in the brain will lead to brain hypoxia. It may also lead to stroke or brain cancer in the long term.