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Malnutrition and the brain: changing concepts, changing concerns

D A Levitsky¹, B J Strupp

¹Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853-6301, USA.

The Journal of Nutrition

|August 1, 1995

Summary

Early malnutrition

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Area of Science:

Neuroscience
Developmental Biology
Nutritional Science

Background:

Historically, early-life malnutrition was believed to cause irreversible brain damage and cognitive deficits.
Current understanding acknowledges partial recovery in brain structure growth, with exceptions in the hippocampus and cerebellum.

Purpose of the Study:

To review the evolving understanding of early-life malnutrition's impact on brain development.
To highlight recent findings on neurochemical alterations and their behavioral consequences.

Main Methods:

Review of historical and contemporary neuropharmacological research.
Analysis of studies on brain development, neural receptor function, and behavioral outcomes.

Main Results:

Most structural brain alterations from early malnutrition show some recovery, but hippocampal and cerebellar changes persist.
Long-lasting alterations in brain neural receptor function are evident even after recovery from malnutrition.
Impaired functions may relate more to emotional regulation and stress response than pure cognitive deficits.

Conclusions:

Early-life malnutrition can lead to persistent neurochemical changes affecting emotional and stress-related behaviors.
The window of vulnerability for these long-term effects is broader than previously thought.
The minimum level of malnutrition required to induce these lasting changes remains undetermined.

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