Not a single twin study on animals or humans has shown any damage or any changes from even the highest concentrations of cannabis.
There are studies that show correlation to mental illness and other negative effects BUT you can show correlations to countless things. For example, tobacco users are 300-400% more likely to be schizophrenics. It does NOT mean tobacco in any way caused their mental illness. These studies only show that people with mental illness are more likely to abuse tobacco and cannabis.
The mentally ill ware simply more likely to be addicts and prone to self medication. Especially when society has no cure for their illness
Not a single twin study on animals or humans has shown any damage or any changes from even the highest concentrations of cannabis.
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cite these “studies.” Seriously. One of the problems we have is that Americans have been prohibited from conducting studies on weed because of its schedule. Its why we have synthc. Please post links to this important research.