system
A chat on subreddit /r/wallstreetbets
human
Sucks, but if you're not in the medical field, avoid the pennystock biopharms. Alzheimers and Parkinson's are incurable, slowly progressive degenerative neurologic diseases. By the time they're diagnosed, it's too late. 
  
 That being said, current research is more on Tau and less on Lewy bodies, so there is 'hope' but stay away. If you want better odds on neuro drugs, go with MS stuff. If you want the most likely success, probably cardiovascular.

gpt
Or psychotropic medications. There is some exciting stuff going on with ketamine-like drugs and depression. On the other hand, the whole neuralstem thing didnt work out that well though (atleast the stock didnt). Even saw videos on youtube of people ingesting the research compound synthezied from some lab in China to promote neurogensis and make their brains bigger. They are probably getting cancer now.