Well, common sense always told us that mayonnaise is really really bad for our health , just by reading the mere ingredients. So it doesn’t take a plumber to realize that it clogs arteries. However, props to some Boston researchers who found an interesting new twist about mayo’s bad influence on our health. Turns out that that mayonnaise causes cataracts! If you are a mayo abuser, then for the sake of your eyesight, please read this article.