Health Effects

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Health Effects image 1

If you have any questions about the following information, please contact the Poison and Drug Information Center at: 

1-800-222-1222

Marijuana use can cause a range of short-term effects due to its active compounds, primarily THC. These effects vary based on the individual's tolerance, the method of consumption, and the potency of the product. While some effects may be desirable, others can pose risks or discomfort, especially for inexperienced users.

  • Euphoria and relaxation: Often described as a "high," characterized by feelings of happiness or calmness.
  • Altered sensory perception: Enhanced colors, sounds, or tastes, and a distorted sense of time.
  • Impaired coordination and reaction time: Reduced ability to perform tasks requiring precision or focus, such as driving.
  • Increased appetite: Commonly referred to as the "munchies."
  • Dry mouth and red eyes: Physical symptoms that are typically harmless but noticeable.
  • Anxiety or paranoia: Possible in higher doses or among individuals prone to these feelings.
  • Short-term memory issues: Difficulty recalling recent events or focusing on tasks.

These effects typically subside within a few hours but can last longer depending on the dosage and method of use.

Youth and adolescents are particularly vulnerable to the effects of marijuana due to their developing brains. Regular or heavy use during this critical period can interfere with normal brain development and lead to long-term consequences. The earlier the use begins, the higher the risk of negative outcomes, including physical, cognitive, and emotional challenges.

Immediate and Long-Term Effects on Youth: 

  • Cognitive development issues: Impaired memory, attention, and learning abilities, with potential long-term effects on academic performance.
  • Altered brain development: Regular use during adolescence may disrupt the development of areas involved in decision-making, impulse control, and emotional regulation.
  • Increased risk of mental health disorders: Higher likelihood of anxiety, depression, and psychosis, especially for those with a family history of mental illness.
  • Risk of addiction: Adolescents are more susceptible to developing cannabis use disorder compared to adults.
  • Social and behavioral problems: Use can contribute to decreased motivation, poor academic achievement, and strained relationships with family or peers.
  • Delayed milestones: Early use may hinder the ability to achieve important developmental goals, such as pursuing higher education or establishing independence.

For youth, avoiding marijuana use is particularly important to support healthy brain development and reduce the risk of long-term adverse effects.

Regular marijuana use over an extended period can lead to a variety of long-term effects on physical and mental health. The severity and likelihood of these effects depend on factors such as frequency of use, age of onset, and individual susceptibility. While some users may not experience significant negative outcomes, others could face challenges that impact their well-being and quality of life.

Common Long-Term Effects:

  • Respiratory issues: Chronic use through smoking may lead to coughing, phlegm production, and increased risk of bronchitis.
  • Cognitive impairment: Persistent use, particularly when started during adolescence, may affect memory, attention, and learning abilities.
  • Mental health concerns: Long-term use has been linked to an increased risk of anxiety, depression, and in some cases, psychosis, especially in individuals with a predisposition.
  • Dependence or addiction: Regular use can lead to cannabis use disorder, characterized by difficulty controlling consumption despite negative consequences.
  • Impact on motivation: Some users report decreased drive or productivity
  • Potential effects on fetal development: Use during pregnancy may impact the baby's brain development, leading to long-term cognitive or behavioral issues.

While marijuana is considered less harmful than some substances, its long-term use should be approached with awareness of these potential risks.