A healthy appetite is vital to a healthy body, especially when the body is healing. Some illnesses decrease the appetite to the point of preventing the body from healing itself. CBD stimulates appetite, according to the National Cancer Institute. In the human body, CBDs bind to cannabinoid receptors in the body. Scientists believe these receptors play an important role in regulating feeding behavior. CBDs stimulate appetite when they dock onto these receptors. CBD also eases nausea and vomiting. This is especially helpful for individuals enduring chemotherapy and other treatments for serious diseases.