Bernstein is all very well, but sounds like a pretty miserable existence! Also, his method was developed in the 1970s, before the development of fancy modern insulins & treatments, so to me seems rather outdated. Faster acting analogue insulins mean that us modern diabetics can eat carbs while still maintaining reasonably good control. Dafne rules!
(also, anyone else mildly offended by Wikipedia’s claim that Bernstein “at 74 years of age, has surpassed the life expectancy of type 1 diabetics”?)