Evidence-Based Benefits
- Eczema and atopic dermatitis relief — Callaway et al. (2005) published a crossover RCT in the Journal of Dermatological Treatment showing 20 weeks of dietary hemp seed oil significantly reduced symptoms of atopic dermatitis, improved skin dryness, itchiness, and reduced the need for topical medications compared to olive oil placebo
- Anti-inflammatory fatty acid profile — Hemp seed oil's GLA content (2-4% of total fatty acids) is converted to dihomo-gamma-linolenic acid (DGLA), which competes with pro-inflammatory arachidonic acid for COX and LOX enzymes, shifting prostaglandin production from inflammatory PGE2 toward anti-inflammatory PGE1
- Cardiovascular support — Schwab et al. (2006) demonstrated that hemp seed oil supplementation favorably altered plasma fatty acid profiles and reduced total cholesterol-to-HDL ratios in healthy volunteers, attributed to the balanced omega-6/omega-3 ratio and GLA content
- Skin barrier improvement — The balanced essential fatty acid composition supports ceramide synthesis in the stratum corneum, the outermost skin layer; deficiency in essential fatty acids is a well-established cause of impaired skin barrier function and transepidermal water loss
- Immune modulation — Richard et al. (2008) reviewed the immunomodulatory effects of GLA-rich oils, showing that GLA supplementation reduced T-cell proliferation and pro-inflammatory cytokine production in multiple clinical settings, suggesting broad immune-balancing properties