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Related Experiment Videos

Changes in body height among selected ethnic groups.

A Laor1, D S Seidman, Y L Danon

  • 1Division of Paediatric Immunology, Sackler School of Medicine, Tel-Aviv University, Rogoff Wellcome Institute of Medical Research, Petach-Tikva, Israel.

Journal of Epidemiology and Community Health
|June 1, 1991
PubMed
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Adolescent body height increased over time, with ethnic groups showing greater gains. Israel

Area of Science:

  • Human growth and development
  • Anthropometry
  • Population genetics

Background:

  • Adolescence is a critical period for physical development, influenced by genetics and environment.
  • Understanding factors affecting body height is crucial for public health and nutritional assessments.

Purpose of the Study:

  • To evaluate the impact of genetic and environmental factors on adolescent body height.
  • To analyze trends in body height among different ethnic groups in Israel.

Main Methods:

  • Retrospective survey of mean standing height from medical records of 17-18 year old adolescents.
  • Analysis of approximately half a million records from individuals born between 1950 and 1971.
  • Examination of ethnic distribution based on countries of origin.

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Main Results:

  • Significant differences in mean standing height were observed among ethnic groups.
  • A consistent linear increase in height was recorded over the study period (1.1 mm/year for males, 0.8 mm/year for females).
  • Ethnic groups with initially lower mean heights exhibited greater height increases.

Conclusions:

  • Israel, as an immigration nation, provides a unique model for studying environmental and genetic influences on human growth.
  • Body height in Israel continued to increase with birth year, indicating ongoing environmental effects.
  • Disparities in height between ethnic groups have decreased over time.