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Heavy marijuana use in adolescence has also been associated with deficits in cognition. A recent study assessing changes in neuropsychological functioning resulting from long-term cannabis use followed a group of adolescents (ages 12 –15 at baseline) over a 14-year period.
The observed effects on memory and learning, they said, showed long-term cannabis use caused "selective memory defects", but "of a very small magnitude". [85] A study by Johns Hopkins University School of Medicine found that heavy cannabis use is associated with decrements in neurocognitive performance even after 28 days of abstinence.
Cannabinoid hyperemesis syndrome (CHS) is recurrent nausea, vomiting, and cramping abdominal pain that can occur due to prolonged, high-dose cannabis use. [4] [5]CHS is associated with frequent (weekly or more often), long-term (several months or longer) cannabis use; synthetic cannabinoids can also cause CHS.
These effects are still being studied and little conclusive research exists due to cannabis' federal illegal status. A mysterious syndrome causes regular weed users to endure unrelenting nausea
After weed enters your system, it can take between one to three hours to feel the complete effects and another one to three hours for those effects to wear off, according to Healthline.
Heavy, long-term exposure to marijuana may have physical, mental, behavioral and social health consequences. It may be "associated with diseases of the liver (particularly with co-existing hepatitis C), lungs, heart, and vasculature". [97]
Because marijuana stays in your system long past the window of cognitive impairment, the potential for false arrests is an increasing concern in states where cannabis is legal.
Short-term use increases the risk of minor and major adverse effects. [7] Common side effects include dizziness, feeling tired, vomiting, and hallucinations. [7] Long-term effects of cannabis are not clear. [7] Concerns include memory and cognition problems, risk of addiction, schizophrenia in young people, and the risk of children taking it by ...