How Your Circadian Clock Genes Affect Your Testosterone- Deep Dive

This Beyond Testosterone podcast episode comes from an academic review article from the Asian Journal of Andrology, published in September-October 2025. This article, titled "Regulation of testosterone synthesis by circadian clock genes and its research progress in male diseases," examines the relationship between circadian rhythms and testosterone production in males. It explores how circadian clock genes centrally and peripherally regulate testosterone synthesis and secretion, and how disruptions in these rhythms are linked to various male health issues, including late-onset hypogonadism, erectile dysfunction, male infertility, and prostate cancer. The authors also discuss potential therapeutic approaches, such as chronotherapy and non-pharmacological interventions, for these conditions based on circadian rhythmicity. The episode concludes by highlighting current limitations in research and suggesting future directions for investigation.


circadian rhythm and testosterone.webp


Reference: Regulation of testosterone synthesis by circadian clock... : Asian Journal of Andrology
 
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Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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