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.