Mayo Clinic Biobank matched case-control study (1:3) of 212 incident RA cases Active work physical activity lowered risk of RA (aOR 3.00), while 3-5 servings high-fat foods, fruits/vegetables lowered risk (OR 0.45; OR 0.54). https://t.co/PW6XRxzcDi https://t.co/wXnu9T55Yb