Can cannabis use harm your health?
Yes. Cannabis use can harm health, and the risks rise with heavy, frequent, or high-THC use. Documented harms include lung irritation from smoking, memory and attention problems, impaired driving, dependence, and in some people anxiety, paranoia, or psychosis. Teens, pregnant people, and anyone with a personal or family history of psychosis face the highest risk.
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What are the main health risks of cannabis?
- Lungs: chronic bronchitis, coughing, and wheezing from smoke.
- Brain: short-term memory, learning, and coordination problems.
- Mental health: anxiety, paranoia, and elevated psychosis risk.
- Dependence: cannabis use disorder and withdrawal symptoms.
- Pregnancy: lower birth weight and developmental concerns.
- Daily life: impaired driving and interactions with other drugs.
Does smoking cannabis harm your lungs?
Cannabis smoke contains many of the same irritants as tobacco smoke, including tar and fine particulate matter. Regular smokers report more chronic bronchitis, cough, and phlegm than non-smokers. Vaping avoids combustion but still delivers high doses of THC and carries its own lung risks.
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Can cannabis use affect mental health?
THC can trigger acute anxiety, panic, and paranoia, especially at high doses. Research links frequent high-THC use to a higher risk of psychotic disorders, particularly in people who start young or carry genetic risk. CBD does not produce the same intoxicating effects, but it is not risk-free.
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How does cannabis affect the teenage brain?
The brain keeps developing into the mid-20s. Starting cannabis before age 18 is tied to weaker attention and memory performance and a higher chance of dependence later. Earlier use also raises the odds of developing cannabis use disorder.
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Is cannabis use risky during pregnancy?
Health agencies advise against cannabis during pregnancy and breastfeeding. THC crosses the placenta and passes into breast milk. Studies associate use in pregnancy with lower birth weight and possible effects on brain development.
Can you become dependent on cannabis?
Yes. About 3 in 10 people who use cannabis develop cannabis use disorder, and that share is higher among daily users. Withdrawal can include irritability, insomnia, appetite changes, and cravings.
Is CBD the same as cannabis?
CBD is one of many compounds in the cannabis plant, but it does not cause a THC-style high. Lab-tested CBD products with verified THC content help you avoid unintentional intoxication. CBD can still interact with medications, so check with a pharmacist or doctor.
When should you talk to a doctor?
Seek advice if cannabis use affects sleep, mood, work, school, or relationships, or if you notice psychosis symptoms. A clinician can assess dependence and discuss treatment options. Quitting is easier with structured support than alone.