Hemp seeds come from Cannabis sativa, the same plant species as marijuana, though hemp varieties contain negligible THC and have been cultivated for food, fiber, and oil across Asia and later Europe for thousands of years — a genuinely ancient agricultural crop whose seeds carry none of the psychoactive properties associated with other cannabis products.
Hemp seed's modern nutritional interest centers on its notably balanced omega-6 to omega-3 fatty acid ratio and complete protein profile, driving research interest specifically in cardiovascular health.
Hemp seeds have real, mechanistically promising nutritional properties, and at least one specific positive human trial finding: a 2018 randomized trial found diets enriched with ALA (the omega-3 fatty acid found in hemp seeds) reduced the inflammatory marker C-reactive protein by up to 15% over 12 weeks — a genuine, if narrow, human RCT finding.
The honest, broader limitation is stated directly in a comprehensive recent review: "clinical evidence remains limited," and despite promising preclinical findings on lipid profiles, blood pressure, and inflammation, the review explicitly states "there is a need for long-term randomized controlled trials to establish the efficacy and safety of hempseed in diverse populations." Given one specific positive inflammatory marker finding, but a comprehensive review's own explicit statement that overall clinical evidence remains limited, "Limited" is the accurate rating.
Seeds eaten raw, roasted, ground into flour, or pressed into oil; hulled seeds ("hemp hearts") commonly added to foods.