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[Assessment of height as an indicator of population nutritional status]
1Departamento de Biología Celular y Genética, Facultad de Medicina, Universidad de Chile.
Insights
Shorter stature in Chilean girls is not due to undernutrition. Genetic factors, specifically European ancestry, appear to influence height, challenging previous hypotheses.
Area of Science:
- Anthropology
- Pediatrics
- Human Growth and Development
Background:
- Chilean girls from middle and low socioeconomic backgrounds exhibit shorter stature compared to European or North American counterparts.
- This observation raises questions about the underlying causes of this growth difference.
Purpose of the Study:
- To investigate and challenge the prevailing hypothesis that undernutrition is the primary cause of shorter stature among Chilean girls.
- To explore alternative explanations for observed growth patterns.
Main Methods:
- Comparative analysis of anthropometric data (height, weight) and sexual maturation.
- Inclusion of biacromial and bi-iliac diameters for Chilean children (0-20 years) from low and middle socioeconomic levels.
- Comparison with existing data from French, English, and North American children within the same age range.
Main Results:
- Chilean girls demonstrated earlier sexual maturation and larger skeletal diameters (biacromial, bi-iliac) than European girls.
- Weight-for-height in Chilean girls exceeded established health guidelines.
- A positive correlation was observed between recent European ancestry and increased height in Chilean girls.
- Chilean boys were smaller and lighter than their international counterparts, with similar bi-iliac diameters to French boys and similar sexual maturation to English boys.
Conclusions:
- The findings suggest that genetic factors, rather than undernutrition, play a significant role in the shorter stature of Chilean girls compared to European or North American populations.
- European ancestry appears to be a contributing factor to height differences.
- Further research into the genetic and environmental interactions influencing growth in Chilean populations is warranted.
Background:
Chilean girls of middle and low socioeconomic levels are shorter than their European or North American counterparts.
Aim:
To challenge the hypothesis that undernutrition is the cause of the shorter stature of Chilean girls.
Material And Methods:
Height, weight, sexual maturation, biacromial and bi-iliac diameters of low and middle socioeconomic level Chilean children aged 0 to 20 years old, were compared with data from French, English and North American children in the same age range.
Results:
Chilean girls had an earlier sexual maturation, had bigger biacromial and bi-iliac diameters and had a higher weight for height than European girls. Weight for height of these girls was over the values proposed by the Chilean Ministry of Health, that are based in NCHS/WHO tables. Chilean girls with recent European ancestry were taller than girls without this ancestry. Chilean boys were smaller and had lower weights than their foreign counterparts. Bi-iliac diameters were similar to those of French boys and sexual maturation was similar to English boys.
Conclusions:
These results indicate that genetics and not undernutrition is involved in the shorter height of Chilean girls, when compared with their European or North American counterparts.