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BK20191333), Industry Prospect and Key Technology R & D (G20211001), the national first-class discipline program of Light Industry Technology and Engineering (LITE2018-11), the Open Project Program for Key Laboratory of Fermentation Engineering (Ministry of Education) (No
Primary Causes (Testicular) Age-related decline (starting around 30) Testicular injury or infection Cancer treatment (chemo, radiation) Genetic conditions (Klinefelter syndrome) Undescended testicles Secondary Causes (Brain/Pituitary) Chronic stress (elevated cortisol) Obesity (fat converts T to estrogen) Poor sleep / sleep apnea Pituitary disorders Medications (opioids, steroids) Low Testosterone in Men Over 40 Testosterone levels naturally decline about 1% per year after age 30
What not to expect: Complete symptom resolution
10.1016/S2666-7568(21)00143-4 53 DOnofrioG.KirschnerJ.PratherH.GoldmanD.RozanskiA
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In: Stein-Wexler R, Wootton-Gorges S, Ozonoff M, editors
