Hi @oregongirl,

With regard to cancer and RA, there are varying schools of thought. One is that chemotherapy is also used to treat symptoms of rheumatoid arthritis, and even slow the joint damage the disease causes. Chemotherapy treatment for RA involves medications called disease-modifying antirheumatic drugs (DMARDs), which includes the classic cancer-fighting drug methotrexate. https://www.healthgrades.com/conditions/how-chemotherapy-treats-rheumatoid-arthritis

Other studies recommend that oncologists should monitor cancer patients who are undergoing immunotherapy treatments because those therapies may put patients at higher risk for developing RA.https://www.healthline.com/health-news/can-cancer-medications-bring-rheumatoid-arthritis#modal-close

You've perhaps read through much of this, but I thought I'd copy some of the RA issues addressed on this Mayo Clinic webpage: https://www.mayoclinic.org/diseases-conditions/rheumatoid-arthritis/diagnosis-treatment/drc-20353653

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Rethinking Rheumatoid Arthritis
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Osteoporosis and long-term prednisone: What is the risk?
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Living better with rheumatoid arthritis
Rheumatoid arthritis: Can it affect the eyes?
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Joint protection
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Tai chi
Fatigue
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Joint pain