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Again, the more studies and medical research that focus on CBD, the more will be known about its side effects and potential medical benefits. For what it's worth, in December 2017, the World Health Organization declared in a report that "cannabidiol does not appear to have abuse potential or cause harm." The WHO also noted that CBD could have "therapeutic value" for epileptic seizures, but that further study is warranted to determine CBD's potential medical use.
Cannabis has been used medicinally for centuries, as a sleep aid, a pain and nausea reducer, to relieve anxiety and other mood problems. In the mid-1960s, scientists identified the first cannabinoid. Since then, scientists have gone on to identify more than 80 individual cannabinoids and continue to investigate them for their potential symptom-relieving and disease-fighting abilities.
The ECS is responsible for regulating many systems in the body, such as the limbic, metabolic, nociceptive, and immunologic functions. Endocannabinoids are natural chemical regulators in the body that interact with cannabinoid receptors and help maintain homeostasis. They seem to do this by detecting and regulating pain, mood, hunger, memory, and more.
That lines up with one of the rare instances of FDA testing. In 2016, the FDA tested several “CBD oils,” ultimately issuing warnings to eight companies. Some of those oils were found to contain no or barely any CBD, and many contained illegal quantities of THC. For example, Healthy Hemp Oil’s “Herbal Renewals 25% CBD Hemp Oil Gold Label” contained 8.4 mg/g of THC. Sana Te Premium Oils, which sold 25 mg “CBD oil” capsules on Etsy, contained between 13 and 19 mg/g of THC and less than 0.1 mg/g of CBD.
“We’ve found that an effective dose for psychological issues, like stress anxiety, generally tends to start out at 6 mg and can go up to 20 mg,” says Zachary Clancy, a horticulturist and clinical herbalist at the Alchemist’s Kitchen, which sells a wide range of CBD goods at its retail store in lower Manhattan and also sells wholesale to restaurants. (Clinical herbalists can complete any of a variety of educational programs and apprenticeships to gain that title.)