Cannabidiol, or CBD for short, is a phyto-cannabinoid found in cannabis plants. However, it does not cause the same psychoactive effects as other naturally occurring cannabinoids (such as tetrahydrocannabinol, or THC). CBD induces feelings of sleepiness and tranquility, making it suitable for insomnia and other sleep disorders; CBD can be used to alleviate symptoms of epilepsy, diabetes, and anxiety disorders, as well. Legality is an issue for some; all 50 states have laws governing the sale, possession, and use of CBD, and they vary significantly (see the table below for a full analysis).
THC is the primary psychoactive compound in marijuana and it is what people are searching for when they want a product that gives them a "high." Unlike THC, CBD isn't known to cause psychoactive effects, and is therefore attractive to those who want to avoid the high but who believe there are other benefits of CBD, said Sara Ward, a pharmacologist at Temple University in Philadelphia. [Healing Herb? Marijuana Could Treat These 5 Conditions]
In 1937, the U.S. Treasury Department introduced the Marihuana Tax Act, which imposed a levy of $1 per ounce for medicinal use of cannabis and $100 per ounce for recreational use. This was opposed by physicians who were not required to pay a special tax for prescribing cannabis, use special order forms to obtain it and keep records detailing its professional use. The American Medical Association believed that evidence of cannabis’ harmful effects was limited and the act would prevent further research into its medicinal worth.
Because it takes a significantly larger amount of hemp stalks to produce hemp oil, there is an increased risk of contamination of toxins contained within the plant. This is a result of hemp's strong bio-accumulator properties, where it pulls toxins from the soil it grows in. Many hemp oils are also known to lack the full spectrum of terpenes and other cannabinoids that are believed to act synergistically with the CBD, meaning that consumers receive less of a benefit. That being said, there are some brands that test rigorously to make sure that the CBD content, as well as the terpenes and other cannabinoids, are up to par. It's a good sign if they offer to provide a certificate of analysis, which will tell you what kind of compounds are in the hemp oil and in what concentrations
In addition to acting on the brain, CBD influences many body processes. That’s due to the endocannabinoid system (ECS), which was discovered in the 1990s, after scientists started investigating why pot produces a high. Although much less well-known than the cardiovascular, reproductive, and respiratory systems, the ECS is critical. “The ECS helps us eat, sleep, relax, forget what we don’t need to remember, and protect our bodies from harm,” Marcu says. There are more ECS receptors in the brain than there are for opioids or serotonin, plus others in the intestines, liver, pancreas, ovaries, bone cells, and elsewhere.