The Earth is full of various types of materials that can be used for the benefit of human beings. Some are highly dangerous for the human body. Over the past few years, scientists have developed new ways to cure different diseases using these substances which are vital for living things if not properly tested by experts. Thousands of drugs have been manufactured by scientists all over the world. What is a drug? According to Wikipedia, a drug is a substance that, when inhaled, injected, smoked or consumed by a living thing, causes a temporary physiological change in the body. There are two types of drugs: Pharmaceutical drugs and Psychoactive drugs. Pharmaceutical drugs are often used to cure a disease or to promote well-being whereas psychoactive drugs are chemical substances that affect the function of the central nervous system. Today the drug under discussion is Marijuana and should it be legalized or not. So what is Marijuana? NIDA (National Institute on Drug Abuse) has defined Marijuana with different names such as weed, herb, pot, ganja etc. It is a greenish-grey mixture of the dried flowers of Cannabis sativa. It is a psychoactive drug and the main chemical responsible for the intoxicating effects is delta-9-tetrahydrocannabinol (THC). Although it can also be used for medicinal purposes.The use of Marijuana has some medicinal benefits. For example, it can be used to treat Glaucoma, which increases pressure in the eyeball, damaging the optic nerve and causing loss of vision. It may help reverse the effects of tobacco and improve lung health. A study published in Journal of the American Medical Association in January 2012, Marijuana does not only impair lung function but can also increase lung capacity. Researchers have tested the lung function of 5115 young adults over the course of 20 years. Tobacco smokers lost lung function over time whereas marijuana users actually showed an increase in lung capacity. The use of medical marijuana helps relieve pain and suppress nausea. In 2010, researchers at Harvard Medical School suggested that some of the drug’s benefits may actually be from reduced anxiety, which can temporarily help a user’s well being. Another major benefit of using Marijuana is that it can stop the spread of cancer cells. Researcher at California Pacific Medical Centre in San Francisco reported in 2007 that, Cannabidiol (CBD), found in Marijuana, can prevent cancer from spreading. Another study published in the journal Molecular Cancer Therapeutics proves how CBD stops cancer by turning of a gene called Id-1. This is highly beneficial as cancer cells make more copies of this gene than non-cancerous cells. Some compounds in cannabis could also kill cancer cells but that research is still ongoing. Although all the facts about marijuana being used as a cure for many diseases, others may say that it is it can cause more problems afterwards and I agree with that. Marijuana can cause both long term and short term problems after its usage. Short term effects of marijuana include: Severe anxiety including paranoia, which involves the fear of one being watched by someone. It can cause panic, hallucinations, loss of sense of personal identity, lowered reaction time, increased heart rate which may lead to a heart attack after excessive use. The mind can also stop coordinating with different body parts such as while driving or playing sports. In long term effects, the use of marijuana can cause a decline in IQ and in some cases it can rise upto 8 points. Under aged students who have been using marijuana illegally have shown poor school performance and higher chance of getting suspended and it is the most commonly used drug among teenagers as it is cheap. According to a website called honest marijuana, it can be seen that the average price per gram of marijuana in the United States of America is about 10 dollars. This not that cheap but once an individual is addicted they would do anything to get their hands on some “weed”. This includes stealing or mugging and even murdering people for money. It can also develop a sense of lower life satisfaction and one cannot stay happy even if he has everything he needs. This can lead to abusive behavior and in case of married couples they could end up getting divorced. It is a agreeable fact that marijuana is highly suitable for treating complex diseases such as cancer, epileptic seizures, Dravet’s syndrome, Alzheimer’s disease, arthritis etc. but it’s long term side effects are highly dangerous and are not cured easily.So in my conclusion of this debate, I think that Marijuana should not be legalized unless it is highly supervised and carried by licensed officials only such as doctors or therapists etc. Although there are some states in the US where marijuana is legal but it is still frowned upon by the people e.g. in California, people are against the legalization of marijuana as they do not want their neighbors smoking it because it exposes their children to it. This example is highly significant because it is not only the responsibility of the children to keep a distance from such drugs but it is also a duty of the parents to keep a check on their children. The use of marijuana should be limited to number of individuals who have can actually benefit from Marijuana. Educational institutes should be aware of the exchange of such drugs because teenagers are easily addicted to such strong drugs and can ruin their future.