The invention disclosed provides means of inhibiting, ameliorating, and/or treatment of rheumatoid arthritis through the use of Noble gas containing mixtures. In one embodiment, the invention provides means of reducing inflammation and immune associated pathology through administration of Noble gas mixtures. In one specific embodiment, Xenon gas is administered to a patient in need at concentrations and frequencies sufficient to inhibit inflammatory and autoimmune processes. In another embodiment Noble gas mixtures are administered to reduce pain and provide symptomatic relieve to a patient suffering from rheumatoid arthritis. In another embodiment the use of Noble gas containing mixtures is disclosed as a means of reducing joint destruction through inhibition of matrix metalloprotease production and activity.