Doctors employing Dr Rollo's advice find an all-meat diet helps type 1 diabetics gain weight, but is not a cure, and diabetic symptoms can be induced when the diet is deviated materially.
The Monthly Gazette of Health Volume 5 by Richard Reece M.D.
"I here would observe that I permit the patient to take the meat in any way which he prefers. Of course roast and boiled mutton and beef are principally employed. Patients I believe could scarcely be prevailed upon to live upon meats rancid and putrid. Indeed I never made the trial as I found by experience that even when they were permitted to take the meat in such variety and manner as they pleased not one would entirely refrain from vegetables although convinced that they were hurtful. All the patients who employed a meat diet soon became fatter and stronger and made less water materially and that of a less diabetic quality than before. The amendment appeared the most conspicuously in the worst cases. Miss Y.Z. (3) was so much reduced and the disease appeared to be making such rapid progress that I believe she could not have lived above a month or six weeks longer had the complaint been left to itself. Mr B.I. (5) was still worse and I have no doubt would have died within a fortnight. Yet after this Miss Y.Z. (3) recovered so far that she could continue in bed through the whole night frequently without rising to make water and could walk five or six miles at once without material fatigue and Mr B.l. (5) who had been a remarkably active man in business amended to such a degree that he carried on his business with the same activity as before his illness. Amendment though not to the same extent was equally perceptible in the other patients who employed a meat diet. Yet that it had not effected a cure was evident from this circumstance that whenever they deviated materially from the meat diet the diabetic symptoms were induced".