Late last year I developed some troubling symptoms: severe fatigue, shortness of breath after light exercise, dizziness and a range of digestive symptoms. I also fell ill with several colds in the space of only a few months, which proved difficult to shake. Knowing a thing or two about the human body, I had an inkling that my blood iron levels might be low, so off I went for a blood test. As suspected, the results showed iron deficiency, along with iodine deficiency and also some low levels of autoimmune antibodies (which we will touch on shortly). Although these results explained my symptoms, the cause of the issues were not so clear.