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Influencia del peso al nacer y vías posteriores en el envejecimiento saludable a lo largo de la vida: un estudio de
Lijie Kong1,2, Chun Dou1,2, Chaojie Ye1,2
1Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, China.
BMC medicine
|February 24, 2026
Resumen
Un mayor peso al nacer se relaciona con mejores resultados de envejecimiento saludable. Factores como el estado socioeconómico, los comportamientos, la función física y la prevención de enfermedades median esta asociación, lo que respalda un enfoque de la salud a lo largo de la vida.
Sus antecedentes:
- El peso al nacer es un indicador clave del crecimiento fetal e influye en la salud a lo largo de la vida.
- Investigar el vínculo causal entre el peso al nacer y el envejecimiento saludable es crucial para la salud pública.
- Comprender los factores mediadores puede informar estrategias para reducir las inequidades en salud.
Objetivo del estudio:
- Examinar la asociación causal entre el peso al nacer y el envejecimiento saludable.
- Identificar factores socioeconómicos, conductuales, funcionales y relacionados con enfermedades que median esta relación.
- Informar estrategias a lo largo de la vida para promover el envejecimiento saludable y reducir las disparidades en salud.
Principales métodos:
- Se realizaron análisis de aleatorización mendeliana de dos muestras en participantes de ascendencia europea.
- El estudio evaluó el efecto del peso al nacer en fenotipos compuestos e individuales de envejecimiento saludable.
- Los análisis de mediación evaluaron 100 mediadores candidatos utilizando un enfoque de dos pasos.
Principales resultados:
- Un mayor peso al nacer se asoció causalmente con fenotipos mejorados de envejecimiento saludable, que incluyen la esperanza de vida y la resiliencia.
- Se observaron efectos de mediación significativos para indicadores socioeconómicos, comportamientos, funciones físicas y enfermedades cardiometabólicas.
- Los mediadores específicos incluyeron la educación, los ingresos familiares, la fuerza de agarre y la diabetes tipo 2.
Conclusiones:
- Un mayor peso al nacer dentro del rango normal contribuye directamente al envejecimiento saludable.
- Los factores modificables como el estado socioeconómico, los comportamientos, la función física y la prevención de enfermedades desempeñan roles mediadores cruciales.
- Se recomienda un enfoque de curso de vida, que comience con un peso al nacer óptimo y abarque intervenciones en estas áreas, para promover el envejecimiento saludable.
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