One reason that nicotine is addictive is that it creates pleasure in the brain, causing a feeling of relaxation. Over time, nicotine keeps your brain from supplying these chemicals that create these good feelings, and you end up craving more nicotine and the feeling it produces. An alcohol addiction works in the same way but with added disadvantages. Excessive alcohol can lead to other mental disorders, such as anxiety and depression.
Find out more about this book:YOU: The Owner's Manual, Updated and Expanded Edition: An Insider's Guide to the Body that Will Make You Healthier and Younger