Side-Effects

Here are just a few of the health effects you may want to know:

• Marijuana use directly affects the brain—specifically the parts of the brain responsible for memory, learning, and attention.
• The compounds in marijuana can affect the circulatory system and may increase the risk of heart attacks and strokes.
• Smoking marijuana can lead to a greater risk of bronchitis, cough, and phlegm production.
• Marijuana users are significantly more likely than nonusers to develop chronic mental disorders, including schizophrenia. Schizophrenia is a type of mental illness where people might see or hear things that aren't really there (hallucinations).
• Eating foods or drinking beverages that contain marijuana have some different risks than smoking marijuana, including a greater risk of poisoning.
• About 1 in 10 marijuana users will become addicted. For people who begin using before the age of 18, that number rises to 1 in 6.
• Some research shows that using marijuana while you are pregnant[288 KB] can cause health problems in newborns—including low birth weight and developmental problems.
• Marijuana use can slow your reaction time and ability to make decisions when driving[271 KB].

In summary, marijuana use is harmful to children and adolescents.  For this reason, the American College of Pediatricians opposes its legalization for recreational use and urges extreme caution in legalizing it for medicinal use.  Likewise, the American Academy of Child and Adolescent Psychiatry (AACAP) recently offered their own policy statement opposing efforts to legalize marijuana. They similarly pointed out that “marijuana’s deleterious effects on adolescent brain development, cognition, and social functioning may have immediate and long-term implications, including increased risk of motor vehicle accidents, sexual victimization, academic failure, lasting decline in intelligence measures, psychopathology, addiction, and psychosocial and occupational impairment.” Thus the AACAP (a) opposes efforts to legalize marijuana, (b) supports initiatives to increase awareness of marijuana’s harmful effects on adolescents, (c) supports improved access to evidence-based treatment, rather than emphasis on criminal charges, for adolescents with cannabis use disorder, and (d) supports careful monitoring of the effects of marijuana-related policy changes on child and adolescent mental health.⁴⁹ The College agrees with this position on marijuana.

The effects of cannabis, the report continues, can be euphoria or dysphoria, calm, anxiety or even psychosis. Additional phenomena include heightened wakefulness followed by drowsiness, a sharpening of the senses followed by slower comprehension, and increased motor activity followed by problems of coordination. “Many of these side effects of cannabis stems from a high dosage or chronic use,” writes the pharmacists' association.