Early childhood malnutrition impairs adult resting brain function using near-infrared spectroscopy

Area of Science:

• Neuroscience
• Developmental Psychology
• Public Health

Background:

• Early childhood malnutrition affects over 200 million children globally.
• Malnutrition in early life is linked to lasting cognitive and behavioral issues.
• Few studies explore long-term brain function impacts of childhood malnutrition using neuroimaging.

Purpose of the Study:

• Investigate functional brain network alterations in adults with a history of early childhood protein-energy malnutrition (PEM).
• Utilize near-infrared spectroscopy (NIRS) to assess brain function in middle-aged adults.
• Compare brain network characteristics between individuals with and without early malnutrition history.

Main Methods:

• Employed near-infrared spectroscopy (NIRS) on 55 adults (45-51 years) from the Barbados Nutrition Study (BNS).
• Analyzed functional connectivity using Pearson's correlation and graph theoretical approaches.
• Compared brain network segregation and integration between PEM group (n=26) and controls (n=29).

Main Results:

• Identified increased Pearson's correlation in the frontal cortex of the PEM group.
• Observed significantly increased network segregation in previously malnourished participants.
• Found significantly decreased network integration in the PEM group compared to controls.

Conclusions:

• Early childhood PEM is associated with altered adult brain functional networks.
• Observed network changes may indicate compensatory mechanisms for cognitive preservation.
• Findings suggest potential links between early malnutrition and premature or pathological brain aging.