The brain's hippocampus produces its own store of growth hormone, researchers report.
The finding could have implications for athletes taking growth hormone and metabolic steroids to increase muscle mass and for menopausal women using estrogen replacement therapy.
"Growth hormone has been associated with growth of muscles and bones, and the production of it was believed to lie mainly in the pituitary gland," study co-author Ken S. Kosik, co-director of the Neuroscience Research Center at the University of California, Santa Barbara, said in a prepared statement. |