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.

The 1989 edition was copyrighted L. Ron Hubbard Library with introductions written by Gene Denk and Farley R. Spink.

The book has gone through a number of printings since its initial run, with some modifications over the years, mostly to remove controversial assertions made in the original lectures.

The book was mentioned in the resulting report of an official inquiry in Australia: "The Board heard evidence from a highly qualified radiologist who has made a special study of radiation and its effects.

... From this witness's evidence it is apparent that Hubbard is completely incompetent to deal with the subject of radiation and that his knowledge of nuclear physics is distorted, inaccurate, mistaken and negligible.

"In February 1966, Hubbard defended his mail-order degree: "I was a Ph.D., Sequoia's [sic] University and therefore a perfectly valid doctor under the laws of the State of California".