<prompt> Answer this question truthfullyWhat are the causes of failure to thrive?  <response>: <reason> The most common cause of failure to thrive is inadequate calorie intake. Causes can broadly be divided into organic and non-organic causes. Inadequate calorie intake Excessive calorie expenditure Inadequate calorie absorption Poverty and inadequate food storage Feeding difficulties- poor infant feeding technique, improperly reconstituted formula, uninhibited access to high calorie food, behavioral problems related to feeding Inadequate breast milk production, breastfeeding failure, errors in artificial feeding, poor latchsuck strength Mechanical or structural problems with swallowing; cleft lip, cleft palate, neuromuscular disease, motor neuron disease Prenatal insult worsening of prematurity or intrauterine growth restriction Erratic diets unorthodox beliefs, Munchausen syndrome by proxy Systemic diseases causing decreased appetite, anorexia, and food refusal. Chromosomal conditions trisomy 13,trisomy 18, trisomy 21, Turners syndrome Congenital heart disease cyanotic and non-cyanotic heart diseases. Teratogenic exposures anti-epileptics, tetracyclines Endocrine dysfunction growth hormone deficiency, type 1 Diabetes mellitus Cirrhosis of liver Chronic respiratory illness, intrauterine infections Malignancy Thyroid dysfunction Renal tubular acidosis, Renal failure Increased Intracranial pressure Immunodficiency syndrome causing recurrent infections, e.g. HIV Bowel obstruction - Ladd bands, paralytic ileus, small intestinal bowel obstruction Necrotizing enterocolitis Short bowel syndrome Pyloric stenosis Gastro-esophagal reflux disease Cystic fibrosis Pancreatic insufficiency Malabsorption Pancreatic insufficiency, Celiac disease Giardiasis Inflammatory bowel disease Inborn errors of metabolism amino acid disorders, lysosomal storage diseases Enzyme deficiencies Biliary atresia Cows milk protein allergy 