The fact that marijuana is legal in some states for medical or nonmedical adult use does not mean that it is safe. Using marijuana at any age can lead to negative health consequences:
Using marijuana heavily (daily or near-daily) can damage your memory, attention, and learning ability. This can last a week or more after the last time marijuana was used.
Using marijuana during pregnancy or while breastfeeding may harm the baby.,
Marijuana use has been linked to social anxiety, depression, suicide, and schizophrenia. Scientists don’t yet know whether marijuana use directly causes these health issues, but it may make symptoms more severe.
Smoking any product, including marijuana, can damage your lungs and cardiovascular system (heart and blood vessels). Eating or drinking foods with marijuana can take longer to have an effect and may increase the chance of consuming too much.1 Vaping marijuana has led to lung injury and even death. Use of concentrates in vaping or dabbing devices may increase a number of health risks because of the concentration or strength of marijuana being used.,