The paper referenced in sibling comments purports that alcohol is worse than tobacco.

https://web.archive.org/web/20201112012236/http://dobrochan....

I wouldn't be surprised. There are studies that are beginning to link liver health to neurodegeneration, and that's just one set of potential disease states.

https://www.sciencedaily.com/releases/2021/09/210914152531.h...