Brain Lesions in an Infant Rhesus Monkey Treated with Monosodium Glutamate

The manufacturers of monosodium glutamate and foods containing msg knew long ago that this substance causes brain damage. The following is part of the proof. -Ed.

SCIENCE, Oct. 17, 1969
John W. Olney and Lawrence G. Sharpe

In an infant rhesus monkey brain damage resulted from subcutaneously administered monosodium glutamate. Although a relatively high dose of monosodium glutamate was used, the infant was asymptomatic for a 3-hour observation period during which time hypothalamic neurons were undergoing a process of acute cell death. With the electron microscope it was observed that dendrites and cell bodies of neurons are the tissue components primarily affected in brain damage induced by monosodium glutamate.

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