Thursday, July 15, 2010

Birth weight

kids
Birth weight

Birth weight is the weight of a baby at its birth. It has direct links with the gestational age at which the child was born and can be estimated during the pregnancy by measuring fundal height. A baby born within the normal range of weight for that gestational age is known as appropriate for gestational age (AGA). Those born above or below that range have often had an unusual rate of development – this often indicates complications with the pregnancy that may affect the baby or its mother. The incidence of birth weight being outside of the AGA is influenced by the parents in numerous ways, including:
  1. Genetics
  2. The health of the mother, particularly during the pregnancy
  3. Environmental factors
  4. Other factors, like multiple births, where each baby is likely to be outside the AGA, one more so than the other


There have been numerous studies that have attempted, with varying degrees of success, to show links between birth weight and later-life conditions, including diabetes, obesity, tobacco smoking and intelligence.

baby-birth
Birth weight

Conditions

Associated conditions include:


  • Large for gestational age
  • Small for gestational age
BirthWeight
Low Weight Babies

Influence on adult life



Studies have been conducted to investigate how a person's birth weight can influence aspects of their future life. This includes theorised links with obesity, diabetes and intelligence.


Obesity
Obesity
A baby born small or large for gestational age (either of the two extremes) is thought to have an increased risk of obesity in later life.

GH therapy at a certain dose induced catch-up of lean body mass (LBM). However percentage body fat decreased in the GH-treated subjects. Bone mineral density SDS measured by DEXA increased significantly in the GH-treated group compared to the untreated subjects, though there is much debate over whether or not SGA is significantly adverse to children to warrant inducing catch-up.

Diabetes
diabetes
Babies that have a low birth weight are thought to have an increased risk of developing type 2 diabetes in later life.

Intelligence
Intelligence
Some studies have shown a direct link between an increased birth weight and an increased intelligence quotient.


Effects on the mother

pregnent-woman
There is some evidence of a link between a child's birth weight and its mother's risk of cardiovascular disease.

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