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Related Experiment Videos

Study on iron nutritional status in adolescence.

M Q Cai1, W Y Yan

  • 1Department of Nutrition and Food Hygiene, School of Public Health, Shanghai Medical University, China.

Biomedical and Environmental Sciences : BES
|March 1, 1990
PubMed
Summary

Adolescent iron-deficiency anemia (IDA) is prevalent, especially in females, linked to poor nutrition. A balanced diet improved hemoglobin and physical development, though IQ was unaffected.

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Area of Science:

  • Adolescent Nutrition
  • Hematology
  • Public Health

Background:

  • Iron-deficiency anemia (IDA) is a significant health concern in adolescents.
  • Nutrient intake, particularly iron, is often insufficient in this demographic.
  • Higher IDA prevalence and iron deficiency were observed in female students.

Purpose of the Study:

  • To investigate the prevalence and causes of IDA in Shanghai adolescents.
  • To assess the impact of IDA on cognitive and physical development.
  • To evaluate the effectiveness of a dietary intervention program.

Main Methods:

  • Cross-sectional study of 478 adolescent students in Shanghai.
  • Nutritional intake assessment and biochemical analysis (hemoglobin, free erythrocyte porphyrin, serum ferritin).
  • Stepwise regression analysis for IDA cause identification; correlation analysis for developmental effects.

Main Results:

  • IDA prevalence was 15.8% in males and 32.6% in females; iron deficiency affected 46.8% of males and 61.8% of females.
  • IDA did not significantly impact IQ or school performance.
  • Hemoglobin levels correlated with speed and endurance; serum ferritin correlated with speed in females.

Conclusions:

  • Nutritional deficiencies are common among Shanghai adolescents, contributing to IDA.
  • A comprehensive, balanced school lunch program positively influenced hematological markers and adolescent development.
  • Dietary interventions are crucial for managing IDA and supporting adolescent health.

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