Eaten cooked in food like brownies or cookies. Fatigue, paranoia, possible psychosis. Anger, irritability, aches, pains, chills, sleep disturbance, headache, anxiety, restlessness, depression, inability to concentrate, tremors, hyperactivity, decreased activity, decreased appetite. Marijuana Marijuana is the most commonly used illicit drug in America today. Marijuana grown in the U.S. is now highly potent due to advancements in plant selection and cultivation.
Potency depends on the source and selection of plant materials used.
In 1974, the average THC content of illicit marijuana was less than one percent. In early 1994, potency averaged five percent. The THC of sinsemilla ranges up to 17 percent. Street marijuana in the 1990s is up to 14 times stronger than the marijuana of the 1960s and 1970s. Extended use increases risk to the lungs and reproductive system, as well as suppression of the immune system.