short-term effects of marijuana include: altered senses (for example, seeing brighter colors)altered sense of timechanges in moodimpaired body movementdifficulty with thinking and problem-solvingimpaired memoryhallucinations (when taken in high doses)delusions (when taken in high doses)psychosis (when taken in high doses) long-term effects of marijuana include: -decline in general knowledge and in verbal ability -loss of mental abilities -may impair thinking,memory and learning functions and affect how the brain builds connections between the areas necessary for these functions.
