It's interesting to look at such studies, here is an example: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2721724/figure/DEN243F2/ https://www.ncbi.nlm.nih.go

It's interesting to look at such studies, here is an example: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2721724/figure/DEN243F2/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2721724/figure/... So if you have low BMI you improve sperm concentration if you eat soy 2-8 times a week? Less or more than that is worse? Data is not convincing, and it is easy to find studies which don't agree.