I was diagnosed with PMR and started on Prednisolone 12 weeks ago. I now avoid high oxalate and high lectin foods (spinach, corn, all night shades, seeds, nuts, all wholegrains, sweet potato, turmeric and other spices, etc) and believe my PMR was likely brought on by high consumption of "superfoods" while I was on a weight loss diet. Most so-called superfoods contain high oxalates, known to cause kidney problems and joint pain in some people.

Specifically, I strongly suspect the hydrolysed marine collagen supplement I bought as a treat may have triggered the PMR. It contains type2 collagen (used to induce chronic arthritis in lab rats and pigs in kidney and arthritis experiments) and it's full of hydroxyprolines that convert to oxalates in the body. My PMR suddenly started after 5 days on the marine collagen, but I didn't suspect it at first and kept taking it because all the sellers insisted it was wonderful for joints.

I've managed to avoid weight gain and have even lost 11 pound in the last 12 weeks by continuing my low carbohydrate diet and avoiding snacks. Whenever the Prednisolone raises my blood sugars which sends hunger signals, I check how long it was since my last nutritious meal and instead of eating, I have a glass of water and do some gardening for 10 minutes. That fixes it every time and the garden is looking better, win/win.

I've also avoided fluid retention by drinking plenty of extra water and keeping moving, gently but frequently, during the day.