Estradiol in Men and Cognitive Function - What is its Role? Does Direct Supplementation Help?

CoastWatcher

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As part of prostate cancer (PCa) therapy, many men are deprived of all androgens. This "chemical castration" leads to profound hypogonadism and exceedingly low levels of estradiol. It also results in serious cognitive impairment. A recent study asked the question: can estradiol supplementation improve cognitive impairment in men on androgen deprivation therapy?

role of estradiol in men.webp

OBJECTIVE: To summarize data on the effects of estradiol treatment on cognitive function of androgen-deprived genetic male populations (PCa patients and male-to-female transsexuals) and castrated male animals.

RESULTS: While some studies showed that estradiol improves cognitive function (most notably, spatial ability) for castrated rats, what remains uninvestigated are: 1) whether estradiol can improve cognition after long-term androgen deprivation, 2) how estradiol affects memory retention, and 3) how early vs. delayed estradiol treatment after castration influences cognition. For androgen deprived genetic males, estradiol treatment may improve some cognitive functions (e.g., verbal and visual memory), but the findings are not consistent due to large variability in the study design between studies.

CONCLUSION: Future studies are required to determine the best estradiol treatment protocol to maximize cognitive benefits for androgen-deprived genetic males. Tests that assess comparable cognitive domains in human and rodents are needed. What particularly under-investigated is how the effects of estradiol on cognitive ability intersect with other parameters; sleep, depression and physical fatigue. Such studies have clinical implications to improve the quality of life for both PCa patients on ADT as well as for male-to-female transsexuals.

"Cognitive Impacts of Estrogen Treatment in Androgen-Deprived Males: What Needs to be Resolved," Current Neuropharmacology, 2018, https://www.ncbi.nlm.nih.gov/m/pubmed/28294068/
 
Interesting point about the Penile vasculature, I've often wondered how E would effect blood flow and erections as opposed to the libido or interest in having sex.
 
I have brought my e2 from 15 to 40 with direct injection. I noticed nothing in any category. But I may have had other issues that kept me from benefitting like deficiencies/imbalances in several nutrient categories and or eating too many carbs.
 

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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.

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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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