No metabolic side-effects of clinical significance have been reported durin
g a 5-year study of growth hormone (GH) therapy in children with GH deficie
ncy, Turner syn drome, idiopathic short stature or chronic renal insufficie
ncy. In particular, insulin levels increase but remain within the normal ra
nge, as do glucose and haemoglobin A(1c). A recent study showed that the ef
fects of growth on insulin sensitivity in prepubertal children with idiopat
hic short stature represent the changes in carbohydrate tolerance observed
during normal adolescence. Thus, GH treatment may lead to prolongation of t
he physiological state of insulin resistance observed in normal puberty. In
sulin levels during the fasting state and 2 h after a standard glucose load
showed no further rise after the first 3 years of continuous GH therapy. T
he hyperinsulinaemia observed during GH therapy may, therefore, amplify the
anabolic effects of insulin on protein metabolism during puberty. Copyrigh
t (C) 2000 S. Karger AG, Basel.