Disclosed is a therapeutic composition for improving small intestine health, wherein the composition is formulated for enteral administration and comprises threonine, valine, tryptophan, serine and tyrosine, as free amino acids; and water; wherein the composition does not comprise free amino acid glutamine or a glutamine-containing dipeptide, or, if free amino acid glutamine and/or a glutamine-containing dipeptide is present, the total concentration of the free amino acid glutamine and the glutamine-containing dipeptide is less than 50 mg/l; wherein the composition does not comprise glucose or, if glucose is present, the concentration of glucose is less than 1 g/l; and wherein the composition does not comprise free amino acid methionine or a methionine-containing dipeptide, or, if free amino acid methionine and/or a methionine containing dipeptide is present, the total concentration of the free amino acid methionine and the methionine-containing dipeptide is less than 100 mg/l. Also disclosed is the use of said composition for the manufacture of a medicament for treating a human subject having villous atrophy that is formulated for enteral administration.