According to PeaceHealth, a website dedicated to providing information on an array of different supplements and medications, hemp oil can cause minor side effects in the digestive system. For example, the website suggests that hemp and hemp oil can soften the stools, often leading to diarrhea or abdominal cramping. Many times, excessive diarrhea can lead to increased weight loss or malabsorption. While further research is needed to substantiate these side effect claims, it is recommended that for individuals with a history of digestive disorders or irregular bowel movements to not take hemp oil supplements.
Hemp seed oil is manufactured from varieties of Cannabis sativa that do not contain significant amounts of tetrahydrocannabinol (THC), the principal psychoactive element present in the cannabis plant. This manufacturing process typically includes cleaning the seed to 99.99% before pressing the oil. There is no THC within the hemp seed, although trace amounts of THC may be found in hemp seed oil when plant matter adheres to the seed surface during manufacturing. The modern production of hemp seed oil, particularly in Canada, has successfully lowered THC values since 1998. Regular accredited sampling of THC in Canadian hemp seed oil shows THC levels usually below detection limit of 4 ppm (parts per million, or 4 mg/kg). Legal limit for THC content in foodstuffs in Canada is 10 ppm. Some European countries have limits of 5 ppm or none-detected, some EU countries do not have such limits at all.