The least processed form of the cannabis plant is hemp. Hemp contains most of the CBD that people use medicinally. Hemp and marijuana come from the same plant, Cannabis sativa, but the two are very different. Over the years, marijuana farmers have selectively bred their plants to contain high levels of THC and other compounds that interested them, often because the compounds produced a smell or had another effect on the plant's flowers.
However, hemp farmers have rarely modified the plant. These hemp plants are used to create CBD oil. All cannabinoids, including CBD, produce effects in the body by attaching to certain receptors. The human body produces certain cannabinoids on its own. It also has two receptors for cannabinoids, called the CB1 receptors and CB2 receptors.
