I think the ability to open mouth without thinking must run in his family.

The disorder has not been found to run in families.

One runs in families or appears for no known reason.

The diseases can run in families and some people get more than one.

"What runs in your own family, and would you want to know?"

You are more likely to get the disease if it runs in your family.

But they seem to run in families and to be related to sun exposure.

And experts think that sleep talking may run in families.

The cause is unknown, but it may run in families.

What does it mean if a disorder seems to run in my family?