Data from men in greater Seattle area reveals no downward trend in semen quality: further evidence that deterioration of semen quality is not geographically uniform
| Autor: | C A Paulsen, N G Berman, Christina Wang |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Infertility
endocrine system medicine.medical_specialty education.field_of_study urogenital system business.industry media_common.quotation_subject Population Obstetrics and Gynecology Fertility Semen Retrospective cohort study medicine.disease Sperm Semen quality fluids and secretions Reproductive Medicine Epidemiology medicine education business media_common Demography |
| Zdroj: | Fertility and Sterility. 65:1015-1020 |
| ISSN: | 0015-0282 |
| DOI: | 10.1016/s0015-0282(16)58279-x |
| Popis: | Objective To determine whether there has been a decline in semen quality in a group of healthy men during the past 21 years. Design Retrospective analysis of the relationship between time and changes in semen parameters over 21 years using regression analysis. Setting A tertiary university center. Patients Five hundred ten healthy, normal men who donated multiple semen samples as participants in clinical studies between 1972 and 1993. Main Outcome Measures Sperm concentration, semen volume, total numbers of sperm per ejaculate, and percent spermatozoa with normal morphology. Results There was no decrease in sperm concentration, semen volume, total number of sperm per ejaculate, and percent normal sperm morphology in 510 healthy men studied between 1972 and 1993. Conclusion We conclude that in this population of healthy young men there has not been any decline in semen quality in the past 21 years. |
| Databáze: | OpenAIRE |
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