Women choosing to follow a career path may find it easier to start a family later in life.

A new procedure in Colorado allows women to freeze unfertilized eggs so they can become pregnant when they are older.

Doctors say freezing embryos isn't a new thing, but freezing unfertilized ones is.

They say it lets women become pregnant when they're ready.

"Now we can really tell young women who need to preserve their fertility, this really does work, at a high enough rate of efficiency, that you can count on having your eggs available in 5, 10, 15 years," Dr. William Schoolcraft of the Colorado Center for Reproductive Medicine said.

The process is slowly making its way into U.S. reproductive clinics.

People started using it in Japan.