This Week's Testosterone Studies

Nelson Vergel

Founder, ExcelMale.com
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[TD="width: 10"]1.[/TD]
[TD]Effects of Resistance Training on Testosterone Metabolism in Younger and Older Men.[/TD]
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[TD="align: left"]Ahtiainen JP, Nyman K, Huhtaniemi I, Parviainen T, Helste M, Rannikko A, Kraemer WJ, Häkkinen K.[/TD]
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[TD="align: left"]Exp Gerontol. 2015 Jun 13. pii: S0531-5565(15)00187-4. doi: 10.1016/j.exger.2015.06.010. [Epub ahead of print][/TD]
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[TD="align: left"]PMID: 26079649 [PubMed - as supplied by publisher][/TD]
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[TD="width: 10"]2.[/TD]
[TD]Update on Testosterone Replacement Therapy in Hypogonadal Men.[/TD]
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[TD="align: left"]Leung KM, Alrabeeah K, Carrier S.[/TD]
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[TD="align: left"]Curr Urol Rep. 2015 Aug;16(8):523. doi: 10.1007/s11934-015-0523-9.[/TD]
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[TD="align: left"]PMID: 26077352 [PubMed - in process][/TD]
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[TD="width: 10"]3.[/TD]
[TD]Effects of Testosterone Level on Lower Urinary Tract Symptoms.[/TD]
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[TD="align: left"]Crawford ED, Poage W, Nyhuis A, Price DA, Dowsett SA, Muram D.[/TD]
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[TD="align: left"]Am J Mens Health. 2015 Jun 14. pii: 1557988315590655. [Epub ahead of print][/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]PMID: 26077271 [PubMed - as supplied by publisher][/TD]
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[TD="width: 10"]4.[/TD]
[TD]Effects of testosterone replacement therapy on nocturia and quality of life in men with hypogonadism: a subanalysis of a previous prospective randomized controlled study in Japan.[/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]Shigehara K, Konaka H, Koh E, Izumi K, Kitagawa Y, Mizokami A, Nakashima T, Shimamura M, Iwamoto T, Namiki M.[/TD]
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[TD="align: left"]Aging Male. 2015 Jun 15:1-6. [Epub ahead of print][/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]PMID: 26075538 [PubMed - as supplied by publisher][/TD]
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[TD="width: 10"]5.[/TD]
[TD]Effects of long-term testosterone replacement therapy, with a temporary intermission, on glycemic control of nine hypogonadal men with type 1 diabetes mellitus - a series of case reports.[/TD]
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[TD="align: left"]Saad F, Yassin A, Almehmadi Y, Doros G, Gooren L.[/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]Aging Male. 2015 Jun 15:1-5. [Epub ahead of print][/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]PMID: 26075537 [PubMed - as supplied by publisher][/TD]
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[TD="width: 10"]6.[/TD]
[TD]Orthotopic tumorgrafts in nude mice: A new method to study human prostate cancer.[/TD]
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[TD="align: left"]Saar M, Körbel C, Linxweiler J, Jung V, Kamradt J, Hasenfus A, Stöckle M, Unteregger G, Menger MD.[/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]Prostate. 2015 Jun 12. doi: 10.1002/pros.23027. [Epub ahead of print][/TD]
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[TD="align: left"]PMID: 26074274 [PubMed - as supplied by publisher][/TD]
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[TD="width: 10"]7.[/TD]
[TD]Testosterone, dihydrotestosterone and estradiol are differentially associated with carotid intima-media thickness and the presence of carotid plaque in men with and without coronary artery disease.[/TD]
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[TD="align: left"]Chan YX, Knuiman MW, Hung J, Divitini ML, Handelsman DJ, Beilby JP, McQuillan B, Yeap BB.[/TD]
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[TD="align: left"]Endocr J. 2015 Jun 13. [Epub ahead of print][/TD]
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[TD="align: left"]PMID: 26073868 [PubMed - as supplied by publisher] Free Article[/TD]
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[TD="width: 10"]8.[/TD]
[TD]Role of melatonin in mitigating chemotherapy-induced testicular dysfunction in Wistar rats.[/TD]
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[TD="align: left"]Madhu P, Reddy KP, Reddy PS.[/TD]
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[TD="align: left"]Drug Chem Toxicol. 2015 Jun 15:1-10. [Epub ahead of print][/TD]
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[TD="align: left"]PMID: 26072956 [PubMed - as supplied by publisher][/TD]
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[TD="width: 10"]9.[/TD]
[TD]Body Mass Index Is Associated with Impaired Semen Characteristics and Reduced Levels of Anti-Müllerian Hormone across a Wide Weight Range.[/TD]
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[TD="align: left"]Andersen JM, Herning H, Aschim EL, Hjelmesæth J, Mala T, Hanevik HI, Bungum M, Haugen TB, Witczak O.[/TD]
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[TD="align: left"]PLoS One. 2015 Jun 12;10(6):e0130210. doi: 10.1371/journal.pone.0130210. eCollection 2015.[/TD]
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[TD="align: left"]PMID: 26067627 [PubMed - in process] Free Article[/TD]
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[TD]Similar articles[/TD]
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[TD="width: 10"]10.[/TD]
[TD]Long-Term Exposure to Testosterone Therapy and the Risk of High-Grade Prostate Cancer.[/TD]
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[TD="align: left"]Baillargeon J, Kuo YF, Fang X, Shahinian VB.[/TD]
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[TD="align: left"]J Urol. 2015 Jun 8. pii: S0022-5347(15)04148-8. doi: 10.1016/j.juro.2015.05.099. [Epub ahead of print][/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]PMID: 26066403 [PubMed - as supplied by publisher][/TD]
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[TD="width: 10"]11.[/TD]
[TD]Associations Between Sex Hormone Levels and Periodontitis in Men: Results From Nhanes Iii.[/TD]
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[TD="align: left"]Steffens JP, Wang X, Starr JR, Spolidorio LC, Van Dyke TE, Kantarci A.[/TD]
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[TD="align: left"]J Periodontol. 2015 Jun 11:1-14. [Epub ahead of print][/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]PMID: 26062840 [PubMed - as supplied by publisher][/TD]
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[TD]Similar articles[/TD]
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[TD="width: 10"]12.[/TD]
[TD]Nonalcoholic fatty liver disease and alteration in semen quality and reproductive hormones.[/TD]
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[TD="align: left"]Li Y, Liu L, Wang B, Chen D, Wang J.[/TD]
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[TD="align: left"]Eur J Gastroenterol Hepatol. 2015 Jun 5. [Epub ahead of print][/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]PMID: 26062079 [PubMed - as supplied by publisher][/TD]
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[TD]Similar articles[/TD]
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[TD="width: 10"]13.[/TD]
[TD]Sex-different abnormalities in the right second to fourth digit ratio in Japanese individuals with autism spectrum disorders.[/TD]
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[TD="align: left"]Masuya Y, Okamoto Y, Inohara K, Matsumura Y, Fujioka T, Wada Y, Kosaka H.[/TD]
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[TD="align: left"]Mol Autism. 2015 Jun 9;6:34. doi: 10.1186/s13229-015-0028-x. eCollection 2015.[/TD]
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[TD="align: left"]PMID: 26060570 [PubMed] Free PMC Article[/TD]
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[TD]Similar articles[/TD]
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[TD="width: 10"]14.[/TD]
[TD]Testosterone therapy may not be as safe as once thought. Screening men for cardiovascular risks before starting testosterone therapy may help avert dangerous blood clots.[/TD]
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[TD="align: left"][No authors listed][/TD]
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[TD="align: left"]Harv Heart Lett. 2014 Oct;25(2):7. No abstract available.[/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]PMID: 26058097 [PubMed - in process][/TD]
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[TD="width: 10"]15.[/TD]
[TD]A comprehensive review of metabolic syndrome affecting erectile dysfunction.[/TD]
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[TD="align: left"]Kaya E, Sikka SC, Gur S.[/TD]
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[TD="align: left"]J Sex Med. 2015 Apr;12(4):856-75. doi: 10.1111/jsm.12828. Epub 2015 Feb 11. Review.[/TD]
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[TD="width: 10, align: left"][/TD]
[TD="align: left"]PMID: 25675988 [PubMed - indexed for MEDLINE][/TD]
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[TD]Similar articles[/TD]
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hCG Mixing Calculator

HCG Mixing Protocol Calculator

TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

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.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

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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