You know, I'm not sure, I never even thought to link the two. I know I got the worst nightmares when I was quitting cigarette smoking and had to use nicotine patches.
Hmm...this is interesting. I really need to take a long-term break from weed because I do feel like I should have it every day, otherwise the anxiety and such gets too severe for me to handle. But the downsides to continuing that I've seen are DEFINITELY memory slowing/loss, increasing social anxiety, and the financial problems that constantly buying it produces.
Let me know how it goes if you do it