Cannabis is a weed, which contains a chemical called cannabinoids which contains a substance called delta-9-tetrahydrocannabinol (THC) which is found to have the "high" effect on the brain. Due to its high effect the weed plant has been started extensively, it can be cultivated as an indoor plant under the lamps without soil. The drug cultivated now is found to contain more than 20 times of THC than the one cultivated 30 years before.
The drug has become very notorious that it is easily available in the streets and an Australian report had shown that the age of first cannabis use has been reduced drastically with teens started using this drug. The drug is usually smoked or chewed it is found that the THC present in cannabis accumulates in the brain and produces mental and physical instability, changes in color perception, emotional stress and anxiety. Researchers have found that cannabis use can lead to psychoses, depression and schizophrenia.
Researchers are still arguing about the benefits of cannabis, as some scientists feel that cannabis usage leads to mental psychosis and other symptoms whereas some scientists feel that psychoses may not be caused by cannabis as they feel that patients who have mental illness mostly take cannabis as a self medication to ease their symptoms and these reports are falsely reported. People are very much confused about the use of cannabis and are not sure whether it is linked to mental psychosis.