Even if a drug was meant to fight one disease, it often happens that the drug can protect patients against other health problems. This seems to be the case with some arthritis drugs.

Many rheumatoid arthritis (RA) patients are taking Humira to relieve their pain. While the drug relieves pain for most patients, others find that Humira has little effect on their RA symptoms. Researchers may have discovered why the drug may not work in some patients.