I have been unwel for many years, finally diagnosed with a unexplained malabsorption syndrome,which causes malnutrition,which in turn is causing secondary hyperparathyroidism, pth levels decrease when I take 3000mgs of calcium carbonate,and 3000mgs of vitamin d ,but it does not resolve the malabsorption .I have had virtually every test there is,only a 72 hour stool fat test,showed elevated stool fat levels at (11) and (14),no celiac,pancreatic enzymes no help,gallbladder removed,pill-cam,ct- scan,colonoscopies,small bowel biopsies,double balloon enteroscopy,all normal ,also no parasites ever found, do you have any suggestions, regards