Taye Diggs wants to "change the conversation" around schizophrenia after sister's diagnosis

Taye Diggs is opening about a mental health condition that has affected his family: schizophrenia.

The actor, 53, revealed for the first time that his younger sister Christian, 48, was diagnosed with the condition in her 20s.

"I didn't know what to do," Diggs told CBS News of his reaction at the time of her diagnosis. "I'm the older brother. Chris and I were very close. I was born first and then she was born, so we had a certain type of bond, and I had always thought I was there for her in whatever capacity she needed. And then we were hit with this, and I had no idea. I had no understanding of what schizophrenia was."