Cross-sectional and longitudinal determinents of SHBG in a cohort of community- dwelling men

madman

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http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0200078&type=printable



Conclusion:

- our study has confirmed an age-related rise in circulating SHBG in men, beginning from middle-age

- beyond this gradual increase, reduced SHBG levels largely reflects obesity, particularly men with a substantial or predominant visceral fat component with associated metabolic consequences

- we suggest that variation in SHBG reflects de novo lipogenesis within the liver that occurs in the context of insulin resistance

- the observed positive relationship between thyroid hormones and SHBG levels suggest that thyroid hormone may modulate circulating SHBG, either directly or indirectly

- high circulating sex steroids are associated with higher SHBG levels reflecting the direct effect of sex steroids
 

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This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

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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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