In 1959, the American Journal of Clinical Nutrition published the dietary protocol for celiac disease and cystic fibrosis used by the New York City Babies Hospital. The top-ranked hospital, now part of Columbia University Medical Center still exists, but the dietary protocol has changed.
Surprisingly, the protocol describes an SCD-like diet--with a call for simple carbohydrates and complex carbohydrate restrictions which extend beyond gluten. In addition, the diet includes an SCD-like list of vegetables (pureed for babies), fruits, meat and fish. A notable exception is the use of a high protein formula from skimmed milk "from which part of the lactose has been removed." Unlike current celiac treatment, the article reports the eventual return to a regular diet:
This is dramatically different from the current stance of celiac disease being a permanent condition. (Note: the article refers to children, not adults.)
The article also points out:
In regards to the treatment of cystic fibrosis, the dietary protocol is quite similar (there is more salt and less fat) but there is no reported cure. The SCD-like diet is dramatically different than the modern cystic fibrosis diet which includes mac 'n cheese, hot dogs, and pancakes.
That's all from 49 years ago . . .
source: Practical Dietary Management of Patients with the Celiac Syndrome, American Journal of Clinical Nutrition, Vol 7, 463-476, 1959