Tutkimus vuodelta 2016: Vegetaarinen ruokavalio heikentää sperman laatua.https://www.ncbi.nlm.nih.gov/pubmed/27280539/
CONCLUSIONS: The study showed that the vegetables-based food intake decreased sperm quality. In particular, a reduction in sperm quality in male factor patients would be clinically significant and would require review. Furthermore, inadequate sperm hyperactivation in vegans suggested compromised membrane calcium selective channels. However, the study results are cautiously interpreted and more corroborative studies are needed.