You are correct but you really need to provide a source when making this claim because it sounds so unbelievable: https://www.healthline.com/health/alzheimers-

You are correct but you really need to provide a source when making this claim because it sounds so unbelievable: https://www.healthline.com/health/alzheimers-dementia/nicotine-and-alzheimers https://www.healthline.com/health/alzheimers-dementia/nicoti... (Not calling healthline a source, but it has links to publications for those interested). It's important to note, of course, that smoking increases the risk of pretty much every bad health related thing that can happen to you, including dementia. However, using nicotine without smoking might have benefits due to its effects on acetylcholine receptors.