Edited sentence: Long term effects of marijuana include: decline in IQ, poor school performance and higher chance of dropping out, impaired thinking and ability to learn and perform complex tasks, lower life satisfaction, addiction, potential development of opiate abuse, relationship problems, antisocial behavior, financial difficulties, and greater chances of being unemployed.Marijuana usage is reported to have the following short term negative effects: short term memory, anxiety, paranoia, panic, hallucinations, slower reaction time, increased heart rate, sexual problems ( In males), increased risk of stroke, and impaired coordination ( primarily in driving and sports)