Complex sentence: Although the term "natural health" did not become part of common usage until the late 20th century, many of its core beliefs developed in Europe and were brought over to the New World.
Split into simpler sentences: Although the term natural health did not become part of common usage until the late 20th century, its roots can be traced back throughout Western history. Many of its core tenets of beliefs developed over the ages in Europe and were brought over to the New World.