If you have one hernia are you prone to more?

Possibly: There are some genetic factors that predispose people to hernia formation. These are not completely understood, but the short answer is yes.

Maybe: Hernias are more common in men & can run in families. While you could be at risk for other hernias, it does not mean that you definitely are destined to get more hernias. Be healthy, active, avoid smoking & avoid obesity.