How Soybean Oil Consumption Ballooned by 1000x in 100 Years
http://naturalsociety.com/how-soybean-oil-consumption-ballooned-by-1000x-in-100-years/
These data suggest that higher intake of soy foods and soy isoflavones is associated with lower sperm concentration.
https://academic.oup.com/humrep/article/23/11/2584/2913898