Complex sentence: It has become widely accepted in Germany and across Europe as a substitute or adjunct to acupuncture and is quickly becoming popular as a treatment elsewhere, though there is no known anatomical or histological basis for the existence of acupuncture points or meridians.
Split into simpler sentences: It has become widely accepted in Germany and across Europe as a substitute or adjunct to acupuncture and is quickly becoming popular as a treatment elsewhere. There is no known anatomical or histological basis for the existence of acupuncture points or meridians.