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Related Experiment Videos

Developmental zinc deficiency and behavior

M S Golub1, C L Keen, M E Gershwin

  • 1Department of Internal Medicine, University of California, Davis 95616, USA.

The Journal of Nutrition
|August 1, 1995
PubMed
Summary

Developmental zinc deficiency in animals impacts behavior, causing lethargy and affecting learning. Human studies show no behavioral effects, suggesting complex interactions and peripheral factors in zinc

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Nutritional Science

Background:

  • Developmental zinc deficiency is primarily studied in animal models like rats and rhesus monkeys.
  • Severe zinc deficiency can mimic effects of protein-calorie malnutrition on behavior during critical brain development periods.
  • Interpreting behavioral effects is challenging due to confounding factors like altered food intake.

Purpose of the Study:

  • To review the effects of developmental zinc deficiency on behavior in animal models.
  • To compare findings from animal studies with limited human data.
  • To consider the role of brain sparing and peripheral mechanisms in behavioral alterations.

Main Methods:

  • Review of existing literature on developmental zinc deficiency and behavior in laboratory animals.
  • Analysis of studies involving severe zinc deficiency during rapid brain growth periods.
  • Examination of behavioral outcomes including emotionality, food motivation, lethargy, learning, attention, and memory.

Main Results:

  • Severe zinc deficiency in young animals causes lethargy, reduced activity, and impaired learning, attention, and memory.
  • Behavioral changes in zinc-deficient rats resemble those seen in protein-calorie malnutrition.
  • Limited human supplement studies have not reported behavioral effects of zinc deficiency.

Conclusions:

  • Developmental zinc deficiency significantly impacts animal behavior, particularly during early brain development.
  • Peripheral mechanisms and brain sparing complicate the direct link between zinc deficiency and behavioral deficits.
  • Further research is needed to understand the nuanced relationship between zinc status and behavior in humans.

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