However, the red-yellow pheomelanin is believed to cause the warm, golden, or auburn tones found in some types of brown hair. The range of colors produced by melanins is limited to shades of yellow, brown, red, and black. Grey hairs contain only a few melanin granules, spread out through the hair.
Hormones are your body's chemical messengers. They travel in your bloodstream to tissues or organs. Endocrine glands, which are special groups of cells, make hormones. The major endocrine glands are the pituitary, pineal, thymus, thyroid, adrenal glands, and pancreas. In addition, men produce hormones in their testes and women produce them in their ovaries.
Systemic lupus erythematosus (SLE) is another autoimmune disease that can affect joints. Many types of connective tissue are attacked in patients with SLE. SLE can damage joints, skin, kidneys, the brain, and other organs as well. Lupus is more common in women, and more likely in those with African or Asian ancestry.n autoimmune disease, the body attacks healthy joint tissue and causes pain, swelling and inflammation. The Arthritis Foundation estimates that 1.3 million adults in the United States have rheumatoid arthritis (RA), a form of arthritis caused by autoimmune disease.