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  2. Marijuana is a psychoactive drug that contains close to 500 chemicals, including THC, a mind-altering compound that causes harmful health effects. People smoke marijuana in hand-rolled cigarettes, in pipes or water pipes, in blunts, and by using vaporizers that pull THC from the marijuana.

  3. Effects of Marijuana Use: How Weed Affects Your Mind and Body - ...

    www.webmd.com/mental-health/addiction/marijuana-use-and-its-effects

    Marijuana has mind-altering compounds that affect both your brain and body. It can be addictive, and it may harm some people’s health. Here’s what can happen when you use marijuana: You Can Get...

  4. Key points. 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.

  5. Marijuana Side Effects: Physical, Mental, and Long-Term Effects

    americanaddictioncenters.org/marijuana-rehab/long-term-effects

    Read on to learn more about the short and long-term side effects of marijuana, the effects of marijuana withdrawal and treatment for addiction.

  6. Marijuana - Mayo Clinic

    www.mayoclinic.org/drugs-supplements-marijuana/art-20364974

    Research suggests that marijuana use increases the risk of psychosis in people who have schizophrenia. Smoking marijuana can affect your memory and cognitive function and cause harmful cardiovascular effects, such as high blood pressure. Long-term marijuana use can worsen respiratory conditions.

  7. Is Marijuana Bad for Health? Here’s What We Know So Far

    www.scientificamerican.com/article/is-marijuana-bad-for-health-heres-what-we...

    Smoking weed likewise can lead to chronic bronchitis and other respiratory ailments (although, unlike tobacco, it hasn't been definitively tied to lung cancer). And cannabis plants...

  8. The Effects of Marijuana on Your Body - Healthline

    www.healthline.com/health/effects-of-cannabis-on-body

    No matter how you use cannabis, it can cause immediate and long-term effects, such as changes in perception and increased heart rate. Over time, smoking cannabis may cause chronic...

  9. How Cannabis Use Impacts Long-Term Health - Northwestern Medicine

    www.nm.org/healthbeat/healthy-tips/how-cannabis-use-impacts-long-term-health

    It can be smoked, vaped, brewed as tea or consumed in edibles. Research shows long-term cannabis use affects brain development. It’s also associated with many long-term, harmful effects. A Northwestern Medicine expert shares what you need to know about the impact of cannabis use.

  10. Marijuana (Cannabis, Weed): What It Is, Side Effects & Risks

    my.clevelandclinic.org/health/articles/4392

    Smoking any product, including marijuana, can damage your lungs, increase your risk of bronchitis and scar small blood vessels. Smoking marijuana can also increase your risk of stroke, heart disease and other vascular diseases. Vaping THC-containing products is linked to lung injury and even death.

  11. Cannabis products with THC can cause changes in mood, thoughts, and perceptions of reality. These products can also cause harmful health effects on the brain and other parts of the body.