Obesity is an epidemic in the United States, but more people are shedding pounds with the help of weight loss drugs.

At first, it seemed like Luke Poga’s weight gain was due to lack of exercise, but his mother knew something else was wrong.

Using health insurance data, researchers observed a 26 percent relative increase in vasectomies among privately insured men aged 18-64. While overall numbers remain low, the trend highlights the need ...