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Neurodevelopment: The Impact of Nutrition and Inflammation During Adolescence in Low-Resource Settings
Janina R Galler1,2,3, John R Koethe4, Robert H Yolken5
1Department of Psychiatry, Harvard Medical School, Boston, Massachusetts; jgaller@mgh.harvard.edu.
Insights
Childhood malnutrition and inflammation can lead to long-term neurodevelopmental deficits in adolescents. Early interventions and targeted strategies are crucial to improve brain health and cognitive outcomes in at-risk youth.
Area of Science:
- Neuroscience
- Public Health
- Developmental Psychology
Background:
- Childhood malnutrition and inflammation affect 1 in 5 children globally, leading to increased infection susceptibility.
- Survivors often experience neurodevelopmental deficits, including poor school performance and behavioral issues, persisting into adolescence.
- Adolescent malnutrition and infection exacerbate these sequelae, impacting a population representing a quarter of the world's people.
Purpose of the Study:
- To review the impact of malnutrition, infection, and inflammation on adolescent neurodevelopment.
- To identify knowledge gaps and evidence regarding nutritional and psychosocial interventions for at-risk adolescents.
- To explore the role of resilience and protective factors in mitigating adverse neurodevelopmental outcomes.
Main Methods:
- Literature review and synthesis of current research on childhood and adolescent malnutrition.
- Analysis of studies examining the effects of malnutrition and inflammation on neurodevelopment.
- Examination of evidence on interventions and protective factors in adolescent populations.
Main Results:
- Malnutrition and inflammation during critical developmental periods (prenatal, childhood, adolescence) significantly impact adolescent brain development and behavior.
- Limited evidence exists for effective nutrition and psychosocial interventions tailored to this vulnerable group.
- Resilience and protective factors play a role in moderating negative outcomes, but require further investigation.
Conclusions:
- There is an urgent need for focused strategies to address the neurodevelopmental consequences of malnutrition and inflammation in adolescents.
- Interventions must consider the intergenerational impact, as adolescent mothers can transmit these risks to the next generation.
- Further research is needed to develop and validate effective interventions to improve neurodevelopmental outcomes in high-risk adolescent populations.
Abstract:
Approximately 1 out of 5 children worldwide suffers from childhood malnutrition or stunting and associated health conditions, including an increased susceptibility to infections and inflammation. Due to improved early interventions, most children even in low-resource settings now survive early childhood malnutrition, yet exhibit continuing evidence of neurodevelopmental deficits, including poor school achievement and behavioral problems. These conditions are compounded in children who continue to be undernourished throughout the adolescent years. At present, these sequelae of malnutrition and infection are of major concern in the adolescent population, given that young people between the ages of 10 and 24 years represent nearly one-quarter of the world's population. Therefore, there is an urgent need to focus on the well-being of this age group and, in particular, on behavioral, cognitive, and brain disorders of adolescents who experienced malnutrition, infection, and inflammation prenatally, in early childhood, and during adolescence itself. Because one-third of all women globally become pregnant during their adolescent years, brain and behavioral disorders during this period can have an intergenerational impact, affecting the health and well-being of the next generation. This article summarizes the current state of knowledge and evidence gaps regarding childhood and adolescent malnutrition and inflammation and their impact on adolescent neurodevelopment, the limited evidence regarding nutrition and psychosocial interventions, and the role of resilience and protective factors in this age group. This overview should help to inform the development of new strategies to improve the neurodevelopmental outcomes of high risk adolescent populations.
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