Most drugs have been synthesized and/or modified version of chemicals previously found in nature. The plant you find harmless is associated with several psychiatric conditions.
kind of, its speculative but far from proven. If you read the literature on it, you find that the information is vague at best.
Myth#7: Marijuana Causes Schizophrenia
This claim is often cited, and stated as if it is factual. The problem it is that there is no clear correlation of cannabis use as being a cause for schizophrenia. However, there is a relationship between the two that has been studied. According to the Institute of Medicine which studied this, there is a tendency for those who suffer from schizophrenia to abuse marijuana along with other substances. According to the IOM, those who suffer from mental disease, tend to become abusers of drugs.
“More often than not, drug dependence co-occurs with other psychiatric disorders.
Most people with a diagnosis of drug dependence disorder also have a diagnosis of a
another psychiatric disorder (76% of men and 65% of women). The most frequent co-occurring disorder is alcohol abuse” (Joy & Watson, 1999).
The study goes on to state that based on the data gathered, it appears to be most likely that the condition preceded the use of drugs, and is not the culprit behind the cause of the disease.
“A strong association between drug dependence and antisocial personality or its precursor, conduct disorder, is also widely reported in children and adults (reviewed in 1998 by Robins126). Although the causes of the association are uncertain, Robins recently concluded that it is more likely that conduct disorders generally lead to substance abuse than the reverse” (Joy & Watson, 1999).
Another recent study has been conducted and may suggest a link between schizophrenia and cannabis use at a young age, while the brain is still developing. While still not conclusive, it is recommended that those under the age of 18 avoid being exposed to marijuana unnecessary. Of course, this is no different than many drugs on the market, in which certain groups and age brackets should avoid taking it. After all, the use of tobacco at a young age has been known for a long time to cause various issues that are not of equal concern when compared to that of a full grown adult.
Another recent study tackling the issue of mental illness stated the following:
“Castle cites one study that indicated people with schizophrenia had a lifetime rate of cannabis exposure of 97 percent – meaning almost all of them have tried the drug. Yet, he also notes that most people who use cannabis do not develop schizophrenia, and that many people diagnosed with schizophrenia have never used cannabis. Therefore, it is likely that cannabis exposure is a ‘component cause’ that interacts with other factors to ‘cause’ schizophrenia or other psychotic disorders, but is neither necessary nor sufficient to do so alone,” (Lenti, 2013).
An opposing group of researchers, Suzanne Gage, Stan Zammit and Matt Hickman of the Universities of Bristol and Cardiff stated the following to the above statement:
“There is evidence that cannabis use in many developed countries has increased greatly over the past 40 years. For example, in the United Kingdom, cannabis use has risen 10-20 fold since the 1970s,” they write. “However, recent data on new admissions for schizophrenia have shown no increase at all; indeed, there is a suggestion of a downward trend in diagnoses.”
It would appear that despite the recent medical literature, they are no closer to proving cannabis as being a cause of mental illness then The IOM was back in 1999. Although on a side note, what prescription and non- prescription based drugs are known to cause psychosis including suicidal thoughts as a side effect?
• Anticholinergic Medications (Spiriva, Benadryl, etc.)
• Anxiolytic Medications (Xanax, Valium, etc.)
• Digoxin (Lanoxin, Digitek, etc.)
• Phenytoin (Dilantin, Phenytek, etc)
• Corticosteroids (prednisone, hydrocortisone, etc.)
• Narcotics (Vicodin, Oxycodone, etc.)
• Cimetidine (Tagamet)
At this point all that can be concluded is that there May be a risk associated with adolescent use and mental illness. However, most who suffer from such disorders showed signs of mental illness before use of the drug. One question, however, is if it does cause schizophrenia, which makes up 1% of the U.S. population, then why is there not 7+ million schizophrenics in this country?