Yeah, I've noticed this, too. Not to a disturbing degree and frankly I'm more than smart enough for most of my daily activities (so I feel I can spare a few brain cells now and again) - however, yes, it's worrisome.

I've noticed that good nutrition helps this a lot.

Try to have some healthy munchies on hand... if, as you say, you can't resist junk... buy healthy junk ahead of time and be prepared.

Rice crackers + peanut butter or sunbutter are amazing.
Yogurt and fruit for the sugar cravings. Or even vitamin C chewables (in moderation).
Gatorade is better than soda, and Smart Water is better yet.

It's okay to munch out, but not on fast food and sugar. The brain needs to rebuild itself after exposure to any psychoactive.

I recommend getting plenty of DHA (one of the omega-3 fatty acids). It's great for the brain.
TheSmokingMonkey Reviewed by TheSmokingMonkey on . Weed causes temporary decrease in intelligence? I've been an occasional smoker for 7 months, one or twice a week usually. Lately I've been wondering if weed can cause a temporary decrease in mental ability. I'm very interested in math and science - I get good marks, usually 90s, and I intend on studying physics next year at university. As such, I highly value my mental agility and problemsolving ability. Now it could just be me, but I've noticed that sometimes after I smoke, for about 24-48 hours, I am slightly less able comprehend math and Rating: 5