What Rheumatoid Arthritis hints at? Rheumatoid Arthritis is not just arthritis or pain in the bone joints but at a deeper level pinpoints problems with bones, and bone joints in the body. Pain in the bones may focus on problems with the bone marrow. What is bone marrow? Bone marrow is blood inside the bones. Blood inside the bones is thicker compared to blood that flows in the veins. Blood in the form of bone marrow may come into action when the body faces a deep cut and blood flow out of it. Bone marrow may form a protective layer on the deep cut preventing further blood loss from the body. What is the reason for pain in the bone marrow? Pain in the bone marrow may pinpoint problems with red blood cells in the body. Red blood cells are formed in the bone marrow. Red blood cells are synonymous with blood. What role does blood play in the body? Blood is the transmitter of oxygen in the body. Oxygen to all vital organs is required for their functioning....