Month‐of‐birth effect on height and weight in Polish rural children

  title={Month‐of‐birth effect on height and weight in Polish rural children},
  author={Krzysztof Kościński and Marta Krenz‐Niedbała and Agnieszka Kozłowska-Rajewicz},
  journal={American Journal of Human Biology},
This study investigated a hypothesis of dependence of child height and weight on the month of their birth. The sample comprised 1,241 subjects, 568 boys and 673 girls, age 6–20 years, from villages in Olsztyn Province, Northeast Poland. Individuals' height and weight data were standardized by sex and age to allow grouping of individuals born in the same month irrespective of their sex and age at examination. Subjects born in October to March proved to be significantly taller and heavier than… 

Month of birth and body height differences in Polish urban schoolchildren from Katowice

The present study is aimed at testing a hypothesis of a similar pattern of month-of-birth effect on body height in both Polish urban and rural populations. Height differences among 1599 subjects aged

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It is suggested that month and season of birth influence height and weight of schoolchildren in Tokushima but not their degree of obesity.

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The analysis of sample data of 833 adult men, 18-52 years of age, collected from 600 families in rural Hebei in 2005, shows that adult men born in winter months are, on average, 1.04 cm shorter than those born during the rest of the year.

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Season of birth and subsequent body size: The potential role of prenatal vitamin D

The season‐of‐birth effect on body size in the sample of 1,148 eight‐year‐old Polish urban children was explored and the mechanism responsible for this effect was proposed: Vitamin D regulates embryo's cellular differentiation, and its deficiency triggers permanent developmental changes.

Season of Birth and Subsequent Body Size : The Potential Role of Prenatal Vitamin

The season-of-birth effect on body size in the sample of 1,148 eight-year-old Polish urban children was explored and the mechanism responsible for this effect was proposed.

Association between birth season and physical development in children under 3 years old residing in low-income counties in western China

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  • 2015
It is speculated that babies born in the dry season were affected in the third trimester by the high disease burden that characterizes the wet season, and some potential factors, including insolation, the position of the authors' planet with respect to the sun, food availability, and maternal workload were eliminated.

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Supplementation of vitamin D after birth affects body size and BMI in Polish children during the first 3.5 years of life - an analysis based on two cohorts measured in the years 1993-1997 and 2004-2008.

The study underlines the importance of a supplementation of vitamin D, season of birth and birth weight and length in current weight, height and body proportion in the first 3.5 years of life.



Height and weight differences among South African Urban schoolchildren born in various months of the year

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  • Environmental Science
    American journal of human biology : the official journal of the Human Biology Council
  • 1990
The similarity of the findings to those from the Northern Hemisphere suggests a factor common for the entire earth, possibly related to the ellipsoid shape of the orbit of the planet.

Month of birth and height of Spanish middle-aged men.

Male adults born in summer proved to be 1.7 cm taller than their counterparts born in winter, compatible with the hypothesis that adult male height could be partially influenced by physical environmental factors such as the action of sunlight during the early stages of life.

Further studies on the month-of-birth effect on body size: rural schoolchildren and an animal model.

In both the animal model and rural children the month-of-birth effect decreases with advancing age and is more pronounced in males than in females, in agreement with previous observations in urban children from Cape Town.

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Examination of the relationship between maternal height and infant birthweight in a multi‐ethnic cohort of 8,870 women with uncomplicated pregnancies who delivered singleton infants at the University of California, San Francisco, 1980–1990 found increasing maternal height was significantly and positively associated with infant birth Weight in White, Black, and Asian women, but not Hispanic women.

The seasonality of live birth is strongly influenced by socio-demographic factors.

The results suggest that the seasonality of births is, at least in this population, strongly influenced by socio-demographic factors.

Seasonality and weight gain during the first year of life

  • E. PollittJim T. Arthur
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    American journal of human biology : the official journal of the Human Biology Council
  • 1989
Whether in a tropical region the effects of seasonality on weight gain interact with the developmental stage of the infant and whether these interactions are partly regulated by the growth history of the infants is investigated.

Proximate determinants of birth seasonality and conception failure in Nepal.

Both the frequency distribution of live births and a life-table analysis of women's exposure to the risk of conception show significant seasonality.

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Seasonal pattern in the rate of growth in height of children living in Guatemala.

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  • Biology
    American journal of physical anthropology
  • 1978
It is found that pre and post adolescent children follow a seasonal pattern of growth but adolescent children do not, and it is suggested that the results are due to an effect of seasonal changes in ultraviolet light availability and the synthesis of vitamin D3 as mediated by the level of maturation of each child.

Seasonal variation in pre- and postpartum maternal body measurements and infant birth weights.

Maternal pre- and postpartum weight and skinfold thicknesses and infant birth weights showed considerable seasonal variation, which most probably reflect annual cycles of agricultural activities and food availability.