Hi there, I've been feeling pretty rubbish for about a year. Low mood, hair loss, cold, aches especially headaches, constipation, pounding heart, breathlessness. Had blood tests and told over phone that all results were normal. So I asked for a print out. My B12 is 269, folate 3.3, ferritin 19, vitamin D is 50, TSH is 2.4. Does underactive thyroid cause the low levels of other vitamins? If I treat myself with supplements would that help the thyroid levels? I don't know where to begin with supplements though and no help forthcoming from GP. Thank you. Pic of full blood test results attached. PS my gran suffered from pernicious anaemia in her 70s, my son has ulcerative colitis so there are auto immune diseases in the family.