Clear Body, Clear Mind

Clear Body, Clear Mind is a pseudoscientific book about Scientology compiled from L. Ron Hubbard material from the 1960s. It was published posthumously in 1990 by Bridge Publications, the Church of Scientology's publishing house. The book is considered part of Scientology's canon. It is the textbook for the Purification Rundown ("Purif"), which Scientologists believe is a detoxification program with medical and spiritual benefits. Medical professionals characterise it as dangerous, quackery, and in some cases lethal.