Are you sure that it is PMR? The day I started prednisone, my pain disappeared! But that said, there are a few discussion threads that discuss diet and PMR. Just search for "diet PMR" within the Mayo Clinic site. I do think that it made a difference in my very mild case to begin with and tapering off 10 mg. of Prednisone in a year. Think and eat fiber and anti-inflammatory foods. That's my advice as a registered dietitian.