Gender and age have distinct and interrelated effects on GH secretion in adults. GH secretion falls significantly with aging, particularly in women. The fall in GH release is amplitude- rather than frequency-modulated and appears to be related to estrogen status. Oral estrogen administration is unphysiological and causes a marked perturbation of the GH/insulin-like growth factor I axis. A nonparenteral route of administration is required for further investigations of the physiological role of estrogen in GH secretion.

Keywords:
Sex, Age, Estrogens, Insulin-like growth factor I
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© 1990 S. Karger AG, Basel
1990
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