Sperm quality parameters of Swiss army recruits pre- and peri-COVID-19: a cross-sectional, comparative analysis
Sabine Köppen, Ulrike Held, Nejla Gültekin, Andreas Stettbacher, Zeno Stanga, Ismail I Ülgür, Jeremy Werner Deuel, Patricia Schlagenhauf · 2026
Read Sperm quality parameters of Swiss army recruits pre- and peri-COVID-19: a cross-sectional, comparative analysis by Sabine Köppen, Ulrike Held, Nejla Gültekin, Andreas Stettbacher, Zeno Stanga, Ismail I Ülgür, Jeremy Werner Deuel, Patricia Schlagenhauf (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13202535.txt.
Description
Sabine Köppen and seven co-authors compare sperm quality in Swiss army recruits in a 2026 paper. One cohort was examined in the peri-COVID period, and the other over an earlier decade-plus span, amid reports of a global decline in sperm quality. Samples were analyzed under world guidelines, and the recent cohort also gave hormone measures. Language region and settlement type were checked for geographic patterns.
By world reference values, notable shares of the recent cohort fell low on count, movement, or shape. Yet overall, concentration, total count, movement, and shape stayed similar to the earlier cohort. The authors conclude quality held stable apart from men with recent infection, pending larger studies.
Catalog record
| CREATOR | Sabine Köppen, Ulrike Held, Nejla Gültekin, Andreas Stettbacher, Zeno Stanga, Ismail I Ülgür, Jeremy Werner Deuel, Patricia Schlagenhauf |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 35 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |