What a pity that
@MissPooh 's thread has got derailed by the endless fat debate.
That wasn't what she asked.
Her question was whether increasing fat in the diet affects cholesterol.
The answer (as I understand it) is that changing to a low carb (higher fat) diet can affect cholesterol levels in a number of ways, but these changes are not necessarily harmful. And it is becoming widely accepted that dietary fat intake has almost no (or none at all) impact on a fasting cholesterol test.
Recent studies on cholesterol (mentioned in the video links posted above) show that diet and cholesterol interact very differently from the simplistic model used by most GPS!
Personally, I am absolutely convinced that switching to very low carb and increasing my intake of both saturated and monounsaturated fats has had very beneficial effects on my health. Weight and cholesterol levels are down (very pleased!), my BG levels are under control, and I am very happy.
All I can suggest is that we all educate ourselves to the best of our ability, and make up our own minds.
Thankfully this forum is a great place to pick up links, ideas and references to follow up.