Cannabis has been cultivated by humans, for a variety of purposes, since antiquity. So it comes as no surprise that there are several different species and even different varieties within the species, depending on the purpose the plants were bred for. Through artificial selection, different species of cannabis have different properties–some have been used for medicinal purposes, others as food, and others to create clothes, ropes, and other items.
^ Jump up to: a b c "FDA warns company marketing unapproved cannabidiol products with unsubstantiated claims to treat cancer, Alzheimer's disease, opioid withdrawal, pain and pet anxiety". US Food and Drug Administration. July 23, 2019. Retrieved July 24, 2019. Unlike drugs approved by the FDA, the manufacturing process of these products has not been subject to FDA review as part of the drug approval process, and there has been no FDA evaluation of whether these products are effective for their intended use, what the proper dosage is, how they could interact with FDA-approved drugs, or whether they have dangerous side effects or other safety concerns. cannabidiol oil
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