I do not know if you are male or female, but particularly if you are female, having dealt with anorexia for years, run don't walk to your doctor for a dexascan to measure your bone density. I struggled with anorexia for only about 4 years seriously, but more years after that that I was seriously thin (thinking I looked lovely). When I was 52, I learned that I have developed very severe osteoporosis in my spine and hips due to major loss of calcium in my bones through the years. I have always been a milk drinker, which made this all the more shocking. Osteoporosis has transformed my life now and has left me unsure of my future independence and life style. Osteoporois can even be life threatening. I am on medication that is supposed to significantly slow further natural thinning of the bones, and I exercise and do everything else I can to stem this problem, but the major damage is done. You are right that anorexia is not about food, but for those who suffer from this condition, you must try to find out the cause in your case so that you can deal with it and preserve your health while there is time.