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Article
April 1975

Human Growth Hormone Response to Levodopa: Relation to Menopause, Depression, and Plasma Dopa Concentration

Arch Gen Psychiatry. 1975;32(4):502-503. doi:10.1001/archpsyc.1975.01760220114011
Abstract

After ingestion of 500 mg of levodopa, postmenopausal women had significantly diminished human growth hormone (HGH) responses (mean, 4.6 ng/ml), as compared with those of age-matched men (mean, 9.1 ng/ml; p <.05). The differences between the groups were not related to plasma dopa concentrations.

The HGH responses to levodopa of age-matched unipolar and bipolar depressed men, and of unipolar depressed postmenopausal women, did not differ significantly from their respective normal control groups. Depressive illness of these types does not appear to affect the HGH response to levodopa, once the effect of the menopause is taken into account.

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