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Cannabis use may have a wide range of health effects on the body and brain. There are several risk factors and negative health outcomes associated with cannabis use.
Key points. In 2022, 30.7% of 12 th graders reported using cannabis in the past year, and 6.3% reported using cannabis daily in the past 30 days. Cannabis use can have permanent effects on the developing brain when use begins in adolescence, especially with regular or heavy use.
Cannabis use directly affects brain function — specifically the parts of the brain responsible for memory, learning, attention, decision-making, coordination, emotions, and reaction time. Short and long-term effects of cannabis use on the brain.
Exposure to cannabis smoke. The known risks of secondhand exposure to tobacco smoke—including risks to the heart and lungs 1 —raise questions about whether secondhand exposure to cannabis smoke causes similar health risks.
A variety of information sources are available to monitor the prevalence and trends of cannabis use in the United States. The resources below cover cannabis-related issues, including data around use, emergency department visits, substance use and misuse, policy measures, and other related tools.
When someone addicted to nicotine stops using it, their body and brain have to adjust. This can result in temporary symptoms of nicotine withdrawal which may include: Feeling irritable, jumpy, restless, or anxious. Feeling sad or down. Having trouble sleeping. Having a hard time concentrating. Feeling hungry. Craving nicotine
Key points. Cannabis refers to the dried flowers, leaves, stems, and seeds of the cannabis plant. Cannabis can be used in a number of ways. How cannabis affects a person depends on several factors.
The chemicals can potentially affect a newborn’s brain development and result in hyperactivity, poor cognitive function, and other long-term consequences. Tetrahydrocannabinol (THC), the main active component of marijuana, is stored in body fat and slowly released over time.
Mental health. Cannabis use can cause disorientation and sometimes unpleasant thoughts or feelings of anxiety and paranoia. 1. People who use cannabis are more likely to develop psychosis (not knowing what is real, hallucinations, and paranoia) and long-lasting mental disorders, including schizophrenia (a type of mental illness where people ...
More research is needed to understand the specific effects cannabis smoking may have on lung cancer and other respiratory diseases like emphysema (lung condition that causes shortness of breath) and chronic obstructive pulmonary disease .