And high fat does not neccessarily result in high lipids and cholesterol. In fact the opposite is the case with some low
Doctors often follow the 'book' to cover themselves.
One needs to research carefully, and talk to people who are actually succeeding in controlling BG levels within normal range, avoiding hypos, and lowering serum lipids, cholesterol, BP etc.
The only group of people I have found so far, that fall into this category, are those following Dr.