Potassium Sorbate and Rheumatoid Arthritis: No Evidence of Link

Potassium sorbate (E202) is a widely used antimicrobial preservative (cheese, wine, baked goods, dried fruit, personal care).

No credible scientific evidence links potassium sorbate to rheumatoid arthritis (RA) onset, flares, or progression.

What We Know

• Metabolized to sorbic acid → CO₂ + H₂O—generally recognized as safe (GRAS) by FDA/EFSA/JECFA.
• ADI: 25 mg/kg/day—typical intake far below.
• Rare: contact urticaria, migraine trigger (anecdotal), not autoimmune.
• RA etiology: genetic (HLA-DRB1 SE), environmental (smoking, silica, microbiome), immune dysregulation—not food preservatives.

If You Suspect Food Sensitivity

Keep detailed food-symptom diary. Elimination diet with dietitian supervision. Challenge formally. Most "food triggers" in RA are unproven; focus on Mediterranean diet pattern (anti-inflammatory).

Don't restrict safe preservatives based on internet claims. Evidence matters.