IMO / IME …
Folks w T2 diabetes do very well on a diet low in simple carbs. That’s a far cry from a ketogenic diet.
If you’re new to the game you’d do well to read all you can; there’s plenty of decent advice from legit sources. And plenty of cranks pushing BS too. And of course pass any radical plans by your doc first. As I did.
For my first couple of years I ate zero refined/added sugar, zero potatoes, zero rice, and zero flour. Every meal had some carbs in the form of veg and/or the less-sweet types of fruit. Any excess weight I had melted off and my blood sugar dropped hugely. As a result very little medication was needed to maintain me at completely normal A1C & FBG.
Now, with 8 years experience under my belt, I’ve softened my dietary stance a little. I now eat some, but very little, of that white stuff, still take very little meds, am lean, and maintain an A1C in the low 5s. IOW high normal = not quite pre-diabetic. Despite a known 7/8ths dead pancreas.
At first glance it appears that of necessity a diet low in carbs is high(er) in protein and fat since those are the only 3 choices on offer. That’s less true than it appears.
A better way to describe a diet is that it consists of 5 food types, not just 3: protein, saturated fat, unsaturated fat, complex carbs, and simple carbs,
A diet with nil simple carbs and low saturated fat can be well-balanced in the remaining 3: proteins, unsaturated fats, and complex carbs. Being well-balanced in those things seems to work just fine for general health AND works just fine for maintaining a low A1C & FBG as well.
THE most influential technology for managing diabetes is a fork. Use it wisely or pay the price.