I'd like to know why obesity isn't brought up once in that article. They mention things like quitting smoking but that alone can't be contributing because more men smoked in the past and had higher sperm count. I have a feeling a lot of the suggested causes are things that overweight and obese people also happen to do, like eat fast food from plastic containers, drink too much alcohol, sit in one spot too long, don't workout (fucking obviously). Sperm count has decreased significantly since the 70s but what has also increased significantly in that same time period? Everyone being fat fucks.