Infertility: Low Swiss Semen Quality Highlights a Worldwide Sperm Trend | Inverse

Scientists at the University of Geneva revealed that only 38 percent of Swiss men had semen quality up to World Health Organization Standards. These results put them in good company, with several other countries that have noted sperm quality declines.
https://www.inverse.com/article/56121-semen-quality-decline-in-switzerland-sperm