Zuckerberg shares a status update on Facebook: He and wife are expecting a baby

Facebook CEO Mark Zuckerberg and his physician wife, Priscilla Chan, are expecting a baby.

The co-founder of the world's largest social network used a Facebook post Friday to announce that Chan is pregnant with a healthy baby daughter. He didn't say when the baby is due.

Zuckerberg also said the couple had suffered three miscarriages over the last two years.

Zuckerberg acknowledged in his post that many people are reluctant to talk about miscarriages. But he said he and Chan decided to share the information after hearing from friends who had similar experiences and ultimately were able to have children. He said the couple hopes to encourage other parents who may be struggling with difficult pregnancies.