Hello @olegraymare -- welcome to Mayo Connect. We are glad you found us. Connect is a great place to ask questions and learn what others with similar health concerns are doing for treatments. I also have polymyalgia rheumatica (PMR). As my rheumatologist explained it to me PMR is like arthritis all over the body. My first episode of PMR was in 2007 and I was started on 20 mg prednisone. It took me 3 years to taper off of prednisone and the PMR went into remission and stayed gone for 6 years, It came back in 2016 and again I was started on 20 mg of prednisone. I'm now controlling it with 2 mg dosage and hoping to be off of the nasty stuff in a month or so but there are no promises. The one thing I can tell you is we are all different so you just need to take it one day at a time and keep moving but not over doing it.

You have asked the $64,000 question - what is causing the inflammation? Unfortunately I think the answer is the disease itself, but I'm no doctor and have no medical training. Mayo Clinic has a good overview of PMR here:
https://www.mayoclinic.org/diseases-conditions/polymyalgia-rheumatica/symptoms-causes/syc-20376539
I'm tagging other members who have discussed PMR and prednisone (Mr. Nasty) to see if they can offer you any suggestions or more information. @rolandhp, @barbararene, @mach92, @alanbruce can you offer any suggestions or information for @olegraymare ?

I would also like to mention that I think you are on the right track with nutrition. You might want to check out a book by Dr. Terry Wahls - The Wahls Protocol. She has MS and has a great story about using nutrition for cellular health to reduce or eliminate her MS symptoms. You can read more about her here:
https://terrywahls.com/about/about-terry-wahls/
John