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They do have the same effects on the central nervous system as far as Harmala alkaloids are concerned, including deleterious effects. Some of the aforementioned alkaloids are neurotoxic, are deposited in brain fatty tissues, and can proceed the development of neurological disorders such as Parkinson’s and Alzheimer’s disease.

The public is largely noninformed about the constituents of coffee and tobacco smoke. Only nicotine and caffeine are ever mentioned, and even scientific articles routinely confuse the effects of pure nicotine and tobacco smoke, and those of pure caffeine and coffee. It is a collective illusion.

I never claimed that coffee contains nicotine: rather, what coffee and tobacco have in common are these Harmala alkaloids, the most abundant of which act as so-called monoamine oxidase inhibitors in humans.

However, some rather unexpected things do contain nicotine: tomatoes, potatoes, eggplants and green peppers.



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