This jumped out at me because some people, it seems, are trying to lower their A1c to less than 5, doing long fasts in some cases to achieve it, and perhaps thinking themselves failures if they stay on Metformin.



This has been achievable for me without very low carb (and presumably ketosis), with some moderate fasting (less than 24 hrs). According to my last test at least; I've got another coming up in a April.

Before Dr. Fung, just eating low carb ("eat when you're hungry"), I used to eat too often. IIRC, Dr. Bernstein said to have at least 5 hrs between meals. If you also have 12 hrs between dinner and breakfast, something's got to give, so either 2 meals a day or one has to be something non-insulinogenic like broth or bulletproof coffee.

I think the drumbeat to "eat three small meals and 3 snacks to keep your blood sugar stable" that we've been hearing for years is especially horrible advice for diabetics.