Mycotoxin exposure and infant and young child growth in Africa: what do we know?

Martani J Lombard1

  • 1Centre of Excellence for Nutrition (CEN), North-West University, Potchefstroom, South Africa.

Insights

Infant exposure to mycotoxins like aflatoxin (AF) is linked to growth impairment in Africa. High AF exposure is associated with stunting and wasting, necessitating further research on other mycotoxins.

Area of Science:

  • Environmental Health
  • Pediatric Nutrition
  • Toxicology

Background:

  • Infant and young child (IYC) growth impairment is a significant public health issue in Africa.
  • Early-life exposure to mycotoxin-contaminated staple foods contributes to IYC growth problems.
  • Understanding the impact of mycotoxins on IYC growth is crucial for developing interventions.

Purpose of the Study:

  • To systematically review the existing knowledge on mycotoxin exposure and its effects on IYC growth in Africa.
  • To identify the prevalence and levels of mycotoxin exposure in African infants and young children.
  • To assess the association between mycotoxin exposure and growth parameters in IYC.

Main Methods:

  • Systematic literature search for studies on African IYC mycotoxin exposure and/or growth.
  • Inclusion criteria focused on IYC (under 15 years), mycotoxin exposure rates, and growth data; exclusion of animal studies and other mycotoxins.
  • Analysis of ten selected studies, primarily focusing on aflatoxin (AF) and fumonisin (FB), with limited data on deoxynivalenol (DON) and zearalenone (ZEA).

Main Results:

  • High prevalence (up to 100%) and levels of aflatoxin (AF) exposure were observed in African IYC, with placental transfer and correlation between maternal and breast milk levels.
  • Maternal AF exposure was significantly associated with lower height-for-age (HAZ) and weight-for-age (WAZ) z-scores in infants.
  • Fumonisins (FB) exposure above tolerable daily intake levels was linked to reduced height and weight in IYC; DON and ZEA roles remain unstudied.

Conclusions:

  • Limited epidemiological data reveal extreme AF exposures in African IYC, strongly associated with stunting and wasting.
  • Urgent need for more extensive epidemiological research to elucidate the impact of fumonisins, deoxynivalenol, and zearalenone on IYC growth.
  • Findings underscore the critical public health threat posed by mycotoxins to early childhood development in Africa.
Abstract

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