根据美国的一项初步研究发现，尼古丁可能对帕金森病或阿尔茨海默病患者有益。 另有研究显示，皮质中尼古丁受体结合的显著减少与帕金森病患者痴呆程度和年龄增长成正比。而在帕金森病和阿尔茨海默病中尼古丁结合位点的缺失有相似性。已发现尼古丁可诱导多巴胺从纹状体中释放， According to a preliminary study in the United States, nicotine may have beneficial effects on patients with Parkinson’s disease or Alzheimer’s disease. Other studies have shown that a significant reduction in nicotine receptor binding in the cortex is proportional to the degree of dementia and age in patients with Parkinson’s disease. However, there is a similar lack of nicotine binding sites in Parkinson’s disease and Alzheimer’s disease. Nicotine has been found to induce the release of dopamine from the striatum,