Approximately 38000 us high school seniors reported

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the influence of the drug. Approximately 38,000 U.S. high school seniors reported in 2001 that they crashed while driving under the influence of marijuana and 46,000 reported that they crashed while under the influence of alcohol. Smoking marijuana and then driving is similar to driving with a blood alcohol content of 0.07% to 0.10%, which is considered legally drunk in all 50 states. Are There Any Long-Term Effects? Research has found some of the side effects of persistent marijuana use are: Changes in the brain. Marijuana can affect the areas of the brain that play a part in response to stress, motivation, and reward. Fertility implications. Animal studies suggest that heavy users may experience disruptions in ovulation or produce less sperm. This means that heavy users may have difficulty having children as they get older. Studies also show that babies born to women who use marijuana when they are pregnant may be more likely to have developmental and behavioral problems. Respiratory problems. People who smoke marijuana have more respiratory problems — such as having more mucus, chronic cough, and bronchitis (irritated breathing passages).
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Changes in blood pressure. Over time, continued use of marijuana can lead to decreased blood pressure, which may cause dizziness. It also seems to impair the body's ability to fight off infections and some other diseases. Emotional problems. Heavy users are more likely to report symptoms of depression than nonusers. They can also feel more anxiety, have more personality disturbances, and are at an increased risk of developing schizophrenia, a severe form of mental illness.
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  • Fall '08
  • McCarthy
  • Cannabis, Tetrahydrocannabinol, Cannabis sativa

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