Bernstein doesn't limit the amount of protein and fat. He simply calls for a carb intake of 6/12/12. That is, 6 carbs for breakfast, 12 carbs for lunch and dinner--a total of 30 carbs a day.
That's a bit low for me ;)
He also claims the fears of saturated fat are overblown (but that's a discussion for another day).
I use Dr. B's book more as a guide, that is, I do not follow his diet religiously. I eat more than 6/12/12 carbs. I have reduced my carbs quite a bit. But I probably eat close to 100 per day. I usually eat 3.5 meals per day. I exercise some, but that is the weak part of my diabetic regime. I don't need to lose any more weight, since I was only a few pounds overweight to begin with.
I also try to reduce my saturated fat intake. I eat egg whites, turkey, chicken etc. I try to eat organic/range-fed when possible. Not easy to find those items in my location though.
Primarily, I eat a lot of spinach, lettuce, olives, cauliflower, broccoli and other low carb veggies. I make homemade flax meal muffins. I eat the organic diabetic bread made my Alvarado Street bakeries out of San Francisco. If not that, I have a quick low carb bread that can be made in the microwave.
I do eat turkey, chicken, fish. Not much red meat. I do eat various soy burgers etc. Many are quite good, and fill me up.
I also eat a lot of nuts, Pecans, Walnuts & Almonds.
I do miss the grain cereals though :( And of course all the various breads that are out there.
Soy milk is another favorite of mine.
For cholesterol control I use a product called Profibe. I did post about it here. You can google "ProFibe" if you're interested.
So far, things have been going well. My BG's rarely rise above 130, even post meal. However, they don't often go below 90, even after fasting. Still I'm glad to have my numbers within such a narrow range.
You may want to visit Dr. Bernstein's forum at diabetes-book.com
. Most of the posters are die-hard low-carbers, but they do have a very good recipe section that you may find helpful.