Sources for the long term effects on the brain mentioned in the above journal quote the following "While changes in the hippocampus and parahippocampus were fre

Sources for the long term effects on the brain mentioned in the above journal quote the following "While changes in the hippocampus and parahippocampus were frequently identified, the findings were inconsistent across studies." And the above journal also makes an effort to mention how "low to moderate quality" the data is. For what is the world's most popular recreational drug, it's astonishing to see the lack of research committed.