In the Paleosphere, it's widely held that IN-fertility is linked to sugars. The study you cited is in vitro, but clinical studies seem to show that the ability to conceive is inversely related to the amount of sugar, soy, Ω6 and wheat in your diet. Those sperm in the petri dish are just acting like the ADHD children they are destined to become.
If you really want to dig into this topic, Chris Kresser has done some of the best work pulling together the facts in this area: