Mice that Eat Yogurt Have Larger Testicles

A group of researchers went into the study of yogurt and obesity working on earlier studies stating that yogurt helps prevent age-related weight gain. They attempted to replicate the study and fed the animals high-fat, low-fiber, low-nutrient diet meant to mimic junk food. Then they supplemented half of their diet group with vanilla flavored yogurt. They noticed that the yogurt-eating mice were incredibly shiny, having 10 times the active follicle density of other mice resulting in luxuriantly silky fur. They also found that the testicles of the yogurt consumers were 5% heavier.

 http://www.scientificamerican.com/article.cfm?id=real-males-eat-yogurt