circadian hormones

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...
- Nelson Vergel
- Thread
- Aug 27, 2025
- circadian cycle circadian genes circadian hormones circadian testosterone endogenous circulating testosterone
- Replies: 2
- Forum: Testosterone Basics & Questions
Circadian variation in systemic hormone levels in healthy men

https://link.springer.com/article/10.1007/BF03349304
- Nelson Vergel
- Thread
- Dec 26, 2021
- circadian circadian hormones circadian rythm daily hormone variations
- Replies: 1
- Forum: Testosterone Basics & Questions

TRT Hormone Predictor Widget

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