Cómo el Cortisol Altera el Sueño y Qué Sugiere la Evidencia
El cortisol sigue un ritmo circadiano preciso, y cuando ese ritmo se distorsiona por el estrés crónico, el resultado puede ser un sueño fragmentado, despertar temprano por la mañana y un ciclo autorreinforçante de desregulación hormonal. Comprender los mecanismos detrás de esta alteración apunta hacia estrategias prácticas y basadas en evidencia para restaurar la arquitectura normal del sueño.
Creado con IALa relación entre el cortisol y el sueño no es incidental. El cortisol es una hormona con un ritmo diario estrictamente programado, y cuando ese ritmo se desajusta, las consecuencias alcanzan casi todos los aspectos de la salud metabólica y neurológica. Para muchas personas, la experiencia de despertar a las 2 o 3 de la madrugada, alertas e incapaces de volver a dormirse, puede ser una expresión directa de esta desregulación hormonal más que un simple problema conductual.
Creado con IALa Arquitectura Circadiana del Cortisol y Por Qué Importa para el Sueño
El cortisol no se mantiene en un nivel fijo a lo largo del día. Según Thomas DeLauer, sigue una curva circadiana, aumentando gradualmente desde aproximadamente las 2am y alcanzando su pico unos 30 minutos después de despertar. Este aumento matutino es un evento fisiológico normal y necesario, que proporciona la señal de alerta que ayuda al cuerpo a pasar del sueño a la vigilia. La tarde, por el contrario, debería representar el punto más bajo de esta curva, cuando el cortisol desciende lo suficiente como para permitir que el sistema nervioso parasimpático domine y comience el sueño.
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