Fermented Hemp Seeds Reduced Arthritis Severity by Reshaping Gut Bacteria in Mice

Fermented hemp seeds significantly reduced joint swelling, cartilage and synovial damage, and systemic inflammation while restoring mobility and balancing CD4+ T cell differentiation. FHS restored beneficial gut bacteria including Akkermansia muciniphila and Lactobacillus johnsonii, while modulating short-chain fatty acids and other key metabolites. Bioactive peptides from FHS were absorbed into the bloodstream, exerting direct anti-inflammatory effects.

Collagen-induced arthritis mouse model treated with Lactiplantibacillus plantarum-fermented hemp seeds (FHS). Gut microbiome profiling, metabolomics, immune cell analysis, and histological assessment of joints compared FHS to L. plantarum alone and unfermented hemp seeds.

This study bridges two growing fields: the gut-joint axis in autoimmune disease and the bioactivity of hemp-derived foods. The finding that fermentation unlocks anti-inflammatory properties beyond what either hemp seeds or probiotics provide alone has implications for functional food development.

The gut microbiome is increasingly recognized as a modifiable factor in autoimmune diseases. This study suggests that combining probiotic fermentation with hemp's unique nutritional profile creates a synergistic anti-inflammatory food product, though translation from mouse models to human disease requires significant further research.

Mouse model of induced arthritis does not fully replicate human RA. Fermented hemp seed composition varies with fermentation conditions. Cannot separate contributions of fermentation products, hemp nutrients, and probiotic effects. Short-term study in a single mouse strain.