affects are still unknown. In the book “Cannabis and Cognitive Functioning” it mentions, “Cannabis is the most widely used illicit substance in the world, with estimates between 12 and 20 million current users in the USA alone, but the question of whether long-term use of the drug can result in lasting and irreparable cognitive impairment remains controversial.” ( Solowij xiii ) Since marijuana is so highly abused in the U.S. this is becoming a larger problem. Given that there are so many users and heavy users the effects of marijuana can often times vary from person to person. Information from site “http://council-houston.org/marijuan.htm” says, “ Marijuana can cause the user to develop tolerance, increasing the need for more and more in order to experience the expected high. Some of the effects of marijuana use include increased heart rate, dryness of the mouth, reddening of the eyes, impaired motor skills and concentration, and frequent hunger and an increased desire for sweets.” Although, as mentioned before, these effects can differ from time to time, these are the most common effects of the drug. Another problem with the study of marijuana has been the inefficient facts about behavioral and psychological effects of marijuana use. In the book “Marijuana and Health” it says, “The mind altering effects of marijuana underlie its widespread and increasing popularity…Studies of the effects of marijuana on complex behavior must be carefully interpreted, because there are numerous variables that can influence the results…The dose, type of preparation, route of administration and speed of administration must be specified…The user’s personality, motivation to perform, and especially his previous experience with marijuana, are powerful influences on test results.” (Institute of Medicine 112) This makes it very hard to get specific results ...
