Hormonal systems profoundly influence circadian rhythm. Understanding these connections helps explain the varied timing, patterns, and presentations of circadian rhythm across the lifespan.
Key Hormones in Circadian Rhythm
Cortisol (the stress hormone): Chronically elevated cortisol from ongoing circadian rhythm damages the hippocampus and dysregulates the entire stress response system.
Serotonin precursors: Hormonal fluctuations affect tryptophan availability and serotonin synthesis.
Estrogen and testosterone: Influence mood regulation directly and through effects on serotonin and dopamine systems.
Thyroid hormones: Thyroid dysregulation can mimic or worsen circadian rhythm — always worth screening.
Life Transitions and Hormonal Circadian Rhythm
Hormonal transitions (puberty, postpartum, perimenopause, andropause) are high-risk periods for circadian rhythm onset or worsening.
Addressing Hormonal Contributions to Circadian Rhythm
If hormonal factors contribute to your circadian rhythm, treatment may include hormonal evaluation, targeted supplements, hormone therapy, or approaches that support hormonal regulation through lifestyle.