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    Glossary Oligospermia

    condition of having fewer than 15 million sperm per milliliter

    Oligospermia, also known as low sperm count or oligozoospermia, is a condition where a man has fewer than 15 million sperm per milliliter of semen. This can affect fertility, making it more difficult for a couple to conceive naturally. Causes can include hormonal imbalances, genetic factors, lifestyle choices, and certain medical conditions.

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    Research 30 of 47

    1. Androgen receptor gene CAG and GGN polymorphisms in infertile Nigerian men Journal of Endocrinological Investigation · 2009 · 26 citations
    2. 5α-Reductase Inhibitors (5ARIs) and Male Reproduction Advances in Experimental Medicine and Biology · 2017 · 15 citations
    3. Finasteride and male infertility: a case for prospective collaborative research databases? Fertility and Sterility · 2013 · 1 citations
    4. Health consequences of anabolic steroids: a sexual-medicine perspective International Journal of Impotence Research · 2026
    5. An Update of Congenital Adrenal Hyperplasia Annals of the New York Academy of Sciences · 2004 · 151 citations
    6. Spontaneous fertility in a male patient with testotoxicosis despite suppression of FSH levels Human Reproduction · 2018 · 3 citations
    7. Retorno de la fertilidad en un perro con un abscesso prostático Clinica Veterinaria De Pequenos Animales · 2010 · 1 citations
    8. Significance of the polyglutamine tract polymorphism in the androgen receptor Urology · 2001 · 54 citations
    9. CAG Repeat Testing of Androgen Receptor Polymorphism: Is This Necessary for the Best Clinical Management of Hypogonadism? The Journal of Sexual Medicine · 2013 · 29 citations
    10. Sperm aneuploidy in infertile male patients: a systematic review of the literature Andrologia · 2014 · 26 citations
    11. Testosterone therapy in men: Clinical and pharmacological perspectives Journal of Endocrinological Investigation · 2000 · 25 citations
    12. Relationship between betacoronaviruses and the endocrine system: a new key to understand the COVID-19 pandemic—A comprehensive review Journal of Endocrinological Investigation · 2021 · 23 citations
    13. Male hormonal contraception: looking back and moving forward Andrology · 2015 · 23 citations
    14. Is polycystic ovary syndrome a sexual conflict? A review Reproductive Biomedicine Online · 2016 · 21 citations
    15. Insights learned from L457(3.43)R, an activating mutant of the human lutropin receptor Molecular and Cellular Endocrinology · 2006 · 17 citations
    16. Prostate-Sparing Effects in Primates of the Potent Androgen 7α-Methyl-19-Nortestosterone: A Potential Alternative to Testosterone for Androgen Replacement and Male Contraception1 The Journal of Clinical Endocrinology and Metabolism · 1998 · 14 citations
    17. Role of Environmental Factors and Gonadotoxin Exposure in Unexplained Male Infertility Springer eBooks · 2015 · 2 citations
    18. Exploring phytoandrogens: A review of their potential in health and medicine The Journal of Phytopharmacology · 2025 · 1 citations
    19. Effects of High-dose Radioactive Iodine Therapy on Hormonal Profiles and Sperm Quality in Thyroidectomy Patients Molecular Imaging and Radionuclide Therapy · 2026
    20. Drug-induced male infertility: a real-world study using FAERS and EudraVigilance databases Frontiers in Pharmacology · 2026
    21. Impact of Chemotherapeutic Drug on People living with Cancer International Research Journal of Modernization in Engineering Technology and Science · 2024
    22. Gonads John Wiley & Sons, Ltd eBooks · 2013
    23. Auswirkungen einer Hormonersatztherapie mit Testosteron auf Haut, Haare und Anhangsgebilde Journal für Kardiologie (Krause & Pachernegg GmbH) · 2003
    24. The pathophysiology of delayed ejaculation Translational Andrology and Urology · 2016 · 21 citations
    25. Post-finasteride syndrome – does it really exist? The Aging Male · 2019 · 7 citations
    26. Iatrogen male infertility Biomedicine & Pharmacotherapy · 1998
    27. Determination of concentrations of sex steroids in blood plasma and semen of male dogs treated with delmadinone acetate or finasteride. PubMed · 2001 · 4 citations
    28. A Review of Androgen‐Progestin Regimens for Male Contraception Andrology · 2003 · 43 citations
    29. Updates to Male Infertility: AUA/ASRM Guideline (2024) The Journal of Urology · 2024
    30. Dihydrotestosterone and 5α-Reductase Humana Press eBooks · 2003