Wrist, Hand & Finger Pain Causes. If you have pain the hand, understand potential causes of hand or wrist pain including arthritis, injury or other conditions. Read More >>. If you have wrist and hand pain, learn what steps your doctor may take to provide you with a diagnosis of arthritis or other condition.
Marijuana also affects brain development. When people begin using marijuana as teenagers, the drug may reduce thinking, memory, and learning functions and affect how the brain builds connections between the areas necessary for these functions.
1 Marijuana use affects dopamine; a neurotransmitter involved in the brain's pleasure producing or reward mechanism, which helps explain its potential for dependency. 2  Memory impairment. 3  Marijuana use can negatively affect short-term memory, especially memories formed while a person was high. 4  Heart and lungs.