The book is based mainly on the results of research published in prestigious medical journals about the effects of nicotine and caffeine. Nicotine reduces the risk of Parkinson's Disease, Alzheimer's Disease, Ulcerative Colitis, and Sarcoidosis. Cognitive improvement is one of the best-established therapeutic effects of nicotine. In human studies, nicotine improves performance in smokers on cognitively demanding attentional tasks. Poor diet, encompassing malnutrition and obesity, is a greater health risk than smoking. Pipe smokers outlive other smokers and non-smokers. Caffeine helps prevent several diseases. Coffee drinkers live longer.
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