Cotton produces a chemical called gossypol that causes sterility in very low doses. It has been used as a low grade food for livestock in the past. Most people will ingest cotton through it's oil, which is now being used by major food producers, notably in potato chips, but other processed foods as well. The industry claims to rely on GMO plants and product refinement to eliminate "most" of the gossypol, but keep in mind this is a very toxic substance subject to controls well out of our hands at this moment. ***** https://www.researchgate.net/post/Is_cottonseed_oil_rich_in_gossypol https://www.unz.com/lromanoff/humanity-at-the-crossroads/