The latter was complemented with observations that stunted children world-wide are often difficult to re-feed and do not show CUG; that children in the study group did not eat within the hospital setting for more than a few days and did not increase the BMI at the initial follow-up; and that GH responses (basal and in response to stimulation) in those with protein-calorie malnutrition were robust at entry and decreased upon re-feeding (56, 57). This evidence concerns the gene GH1 and malnutrition.