Men all over the world are suffering from deteriorating semen quality—often referred to as an outright fertility crisis. Now, however, there may be good news for some of the men who are experiencing problems. In a new clinical study, researchers show that men with obesity improve their semen quality if they lose weight—and maintain the weight loss. "It was surprising to us that such a big improvement can be shown in the semen quality in connection with a weight loss. And as 18 percent of Danes have obesity, this new knowledge may actually make a difference," says Professor Signe Torekov....