Hi
@fumanchu, I've also concluded that fat was demonised wrongly. I have only glanced at the Dr Bernstein diet, so won't comment on it. Instead, I tell you a few bits from my story.
I am T2, diagnosed in 2014 and put on metformin, which helped, but HbA1c was still in the mid 60s. Almost five years ago, instead of taking Gliclazide I decided to do intermittent fasting (IF) based on Michael Mosley's book - The Fast Diet. For this I increased my intake of eggs and fish, as I wasn't allowed any carby food on fast days. This coincided with my cholesterol value improving, it was a bit high. After having lost 10kg and reduced my HbA1 to low 40s, I was able to go off metformin. My T2 has now been diet controlled for the last four years. It was only after this that I found this forum.
Since then my diet contains much more cheese, eggs and bacon, butter, full fat yoghurt, hummus,... While my diet is not as very low carb, as
@KennyA and others here, I eat much fewer carbs and continue my two IF days with no carbs a week. In fact I've banned all low fat stuff and most vegetable fat, such as margarine from my diet. To compensate for lower carb I needed to increase fat and protein. As a result, all my cholesterol values - Total, HDL, LDL and Trig have continued to improve and are mostly green now. I've also been able to keep my weight.