Hemp oil is legal in all 50 states but the production of Hemp Extract is not. Even though both come from marijuana, hemp oil is derived from sterile cannabis seeds, which are legal under the Controlled Substances Act. Hemp extract is derived from the plant's flowers which are not legal in some states.
Use of the Hemp plant began in China sometime around 2300B.C. According to Chinese beliefs, the plant contains the prescription for immortality. The Chinese also used hemp oil to treat Malaria, menstrual problems and fertility.