All About Radiation

All About Radiation is one of the books by L. Ron Hubbard that form the canonical texts of Scientology, although it is no longer promoted by the Church of Scientology nor included in their "Basics" book canon. Its first printing was from HASI (Hubbard Association of Scientologists International) by way of the Speedwell Printing Company, Kent, England, 1957. Later editions were published by the Church of Scientology's in-house publisher Bridge Publications. It is controversial for its claims, amongst other things, that radiation poisoning and even cancer can be cured by courses of vitamins. There is no known cure for radiation poisoning and current medical practice is to provide palliative care until the symptoms subside or the patient dies.

Early printings of the book were credited on the cover as simply "By a nuclear physicist and a medical doctor", while subsequent ones credited L. Ron Hubbard as being the nuclear physicist and "Medicus" as being the doctor.

By the 1979 edition, the "medical doctor" was credited as being Richard Farley.

In the book's most recent edition, the book's authorship is attributed to Hubbard and Dr. Gene Denk and Dr. Farley R. Spink.

The book has gone through a number of printings since its initial run, and has undergone a few modifications over the years, mostly to remove controversial assertions made in the original lectures. As it is a fundamental Scientology tenet that Hubbard's works are considered immutable Standard Tech, not to be altered in any way, except by Hubbard himself, these changes are considered evidence to Freezone practitioners that the current Church alters the text. It is to be noted that the first part of the book is not by Hubbard and that the second part was not written by Hubbard but edited from four of his lectures given in April 1957 in London. These lectures are available since March 2005 with a transcription which makes it possible to see how the book text was edited from the lectures. The book was not reissued in June 2007 as part of the Golden Age of Knowledge program. Among the text removed from the book in later editions:

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