
Sperm quality declines quickly when stored, whether in males or females, a team of researchers from the Department of Biology at the University of Oxford has found.
Researchers carried out a meta-analysis of 115 human studies involving nearly 55,000 men, alongside 56 studies across 30 non-human species. They found that mature sperm deteriorates in storage independently of the male’s age, a process called post-meiotic sperm senescence.