Intra-uterine Growth Retardation and Development of Hypertension

Area of Science:

• Perinatal Medicine
• Developmental Origins of Health and Disease (DOHaD)
• Cardiovascular Epidemiology

Background:

• Low birth weight (LBW), defined as <2,500 grams, has different primary causes in developed (preterm birth) versus developing (intrauterine growth retardation) countries.
• The developmental origins of adult diseases concept suggests early life conditions, including intrauterine environment and infant feeding, impact later health.
• The fetal origin hypothesis posits a link between early life nutrition and the development of metabolic diseases.

Purpose of the Study:

• To explore the association between low birth weight and the subsequent risk of hypertension.
• To elucidate the multifactorial pathomechanisms connecting LBW to hypertension.

Main Methods:

• Review of literature on low birth weight and hypertension.
• Analysis of factors contributing to LBW in different global settings.
• Examination of proposed pathophysiological pathways linking LBW to hypertension.

Main Results:

• An inverse association exists between low birth weight and the later risk of hypertension.
• Key contributing factors to LBW include preterm birth and intrauterine growth retardation.
• Multiple pathways mediate the link between LBW and hypertension, including delayed nephrogenesis and sympathetic hyperactivity.

Conclusions:

• Low birth weight is a significant risk factor for developing hypertension in adulthood.
• The relationship between LBW and hypertension is complex and multifactorial, involving developmental and physiological mechanisms.
• Understanding these early life influences is crucial for preventing adult-onset diseases like hypertension.