The signs and symptoms of using marijuana can include:

• Slow thinking
• Slow reflexes
• Reduced coordination
• Problems concentrating
• Reduced motivation
• Dilated pupils
• Bloodshot or glassy eyes
• Dryness of the mouth
• Increased appetite
• Mood swings
• Panic attacks
• Anxiety and paranoia
• Psychosis
• Hallucinations
• Delusions

The consequences of using marijuana may include:

• Dependence
• Anxiety and depression
• Sleep problems
• Lowered sex drive
• Learning difficulties and poorer educational outcomes
• Memory problems
• Respiratory illnesses such as chronic cough and bronchitis
• Increased risk of cancer of the lung, mouth, throat and tongue
• Paranoia and other psychotic symptoms such as hallucinations with increased risk of developing schizophrenia