In many places surveyed, 20% or more of all adults have left their childhood religious group. Christianity and Buddhism have ...

Read about where Christianity has had the largest net losses, and how those who've left Christianity now identify religiously ...

But switching groups within Judaism is far more common. Some switch to a group that is more religiously observant – for ...

Find out what percentage of adults have joined or left Judaism, or remained Jewish since childhood, in the U.S. and Israel.

Read about where religiously unaffiliated populations have had the largest net gains, and how those who've joined the "nones" ...