The fact that it’s legal does not mean that it is safe. Using marihuana at an early age can lead to negative health consequences.
Heavy marihuana use (daily or near-daily) can do damage to memory, learning, and attention, which can last a week or more after the last time someone used.
Using marihuana during pregnancy or while breastfeeding may harm the baby, just like alcohol or tobacco.
Marihuana use has been linked to anxiety, depression, and schizophrenia, but scientists don’t yet know whether it directly causes these diseases.
Smoking any product, including marihuana, can damage your lungs and cardiovascular system.