A case study, appearing in BMJ Case Reports (2016 Mar 14;2016. pii: bcr2015213301. doi: 10.1136/bcr-2015-213301), looked at a 57 year old man with iron deficiency anemia and cardiomyopathy. He had a severely dilated left ventricle with an ejection fraction of 15%. He was treated with high-dose diuretics, ACE inhibitors and β-blockers. Upon further investigation, it was discovered that he had celiac disease and placed on a gluten-free diet. On the diet, his cardiac function improved dramatically, with the ejection fraction going to 70%. He was able to be taken off of his medications.  The authors of the case study suggest that there may be a connection between celiac disease and cardiomyopathy.