I recently did some blood work and my Total iron binding capacity is 445.  My hair is falling out, I have low libido, gradual weight loss, and am having trouble with constipation.  The doctor thought I might have Lupus or MS but those test results were normal.  I have no idea what the cause is can you answer what you help?
Welcome to Chat Doctor! I have gone through your question and the important findings are that you have coma into of hair fall, low libido, weight loss, constipation, low iron binding capacity, and test for lupus and MS are normal. You have not mentioned any other tests. From my clinical experience I can say that you need you rule out thyroid disorder and Vitamin. B12 deficiency. This can happen in cases of hypothyroidism also. Due to low iron binding capacity, the hemoglobin levels also fall and then other symptoms of constipation low libido, weight loss follow. You must get your liver and kidney function tests done as they can also lead to similar findings. Kidney is also responsible for maintains blood levels in body. I can understand your problem, but I can assure that after all the routine tests your diagnosis will be made. Once diagnosed, such symptoms are completely treatable. Please donor fear of any big disease in your body, most of our problems are only due to being conditions and are well curable. All your symptoms are interlinked and with correct medicine they all will start responding, and you will feel good like your previous self. So, it will be wise to see a doctor again. Hope the reply helps you feel free to ask more questions.