Weed can cause psychosis.

[JerryGarcia]

My homie calls it the "Icky Sticky" i call it "Magic Herbs"

Hey gang, let's go sloake the muggles!

JerryGarcia Reviewed by JerryGarcia on 07-06-2006. Weed can cause psychosis. I often see members on here stating that weed doesn't physically harm the brain (which is true) as if that means it won't harm your psyche. Psychosis: "A severe mental disorder, with or without organic damage, characterized by derangement of personality and loss of contact with reality and causing deterioration of normal social functioning." Weed can and will cause that. It isn't harmless. Rating: 5