Shortness at birth is associated with insulin resistance in pre-pubertal Jamaican children

Area of Science:

• Pediatrics
• Metabolic Health
• Human Growth and Development

Background:

• Birth anthropometry is a potential predictor of childhood metabolic health.
• Understanding early life factors influencing glucose and insulin metabolism is crucial for public health.

Purpose of the Study:

• To examine the association between birth measurements and childhood glucose/insulin metabolism.
• To assess how birth anthropometry relates to insulin resistance in children aged 7.5-10.5 years.

Main Methods:

• Studied 400 mother/child pairs with available birth and gestational data.
• Conducted oral glucose tolerance tests and measured plasma insulin, pro-insulin, and split pro-insulin.
• Utilized skinfold thicknesses to calculate body fat percentage and fat mass.

Main Results:

• Insulin resistance (120-min post-glucose insulin) was inversely correlated with birth length (P<0.005).
• Children in the shortest birth length quartile who were heaviest at age 8 exhibited the highest insulin concentrations.
• Six children (1.5%) presented with impaired glucose tolerance based on WHO criteria.

Conclusions:

• Shorter birth length is a significant predictor of insulin resistance in childhood.
• The degree of insulin insensitivity is exacerbated in heavier children born shorter.
• Early life anthropometry provides insights into later metabolic health trajectories.