I have a close relative with bizarre food preparation regimes and a very restricted diet. She is down to about 10 foods and one of those is a particular margarine. She has been cutting out foods for decades. A recent illness has seen her weight drop to 35 kilos (5.5 stones) before improving a little. We have tried over the years to persuade her to take in more calories and to re-introduce banned foods but she takes umbrage at us suggesting that she doesn't know what her own body can tolerate. Every single ache and pain, twinge and feelings of unease (shakiness, furry tongue, digestive problem etc) leads to something she has eaten in the previous hour or two being removed from her diet, sometimes for good. She only drinks water heated to a specific temperature and keeps a pan just for that purpose. None of her pans can be used by others in the house. She can sound incredibly plausible with her pseudo-science about digestion and nutrition and doesn't like it when you contradict her with the facts. She genuinely seems to want to be a healthier weight, so I don't think that it is Anorexia. Does anyone have any experience of Orthorexics and what can be done to treat them? We are fast coming to the conclusion that she really needs to be sectioned for her own good, but that would have to come from her husband and he seems to have decided that it's easier to pander to her eccentricities.