• Problems with memory and learning
• distorted perception
• difficulty in thinking and problem-solving, and loss of coordination 

The effects of marijuana on perception and coordination are responsible for serious impairments in learning, associative processes, and psychomotor behaviour (driving abilities).

Long term, regular use can lead to physical dependence and withdrawal following discontinuation, as well as psychological addiction or dependence. Clinical studies show that the physiological, psychological, and behavioural effects of marijuana vary among individuals and present a list of common responses to cannabinoids, as described in the scientific literature:

• Dizziness
• Nausea
• Tachycardia
• Facial flushing
• Dry mouth
• Tremor initially, Merriment
• Happiness, and even exhilaration at high doses Marijuana/Cannabis 
• Disinhibition
• Relaxation
• Increased sociability, and talkativeness
• Enhanced sensory perception, gives rise to increased appreciation of music, art, and touch
• Heightened imagination leads to a subjective sense of increased creativity
• Time distortions
• Illusions, delusions, and hallucinations are rare, except at high doses
• Impaired judgement, reduced coordination, and ataxia can impede driving ability or lead to an increase in risk-taking behaviour
• Emotional lability, incongruity of affect, dysphoria, disorganised thinking, inability to converse logically, agitation, paranoia, confusion, restlessness, anxiety, drowsiness, and panic attacks may occur, especially in inexperienced users or in those who have taken a large dose.
• Increased appetite and short-term memory impairment are common