Aytundra wrote:So processing fat is actually limited by cholesterol?
Only if your bile acid production is too low, cholesterol may be limiting,
or something else may be off, such as a lack of activity of particular enzymes required for the conversion of cholesterol to bile acids.
Fat (for sugar, for alleviating insulin system
That depends on how your intake of sugars and protein is.
If these are evenly distributed throughout the day, little insulin is required,
but if you take in a lot of food in one sitting, and your glycogen depots get pretty much filled up,
you may need extra fat to take away the pressure on insulin from protein and sugars.
The extra fat makes it easier to store glycerol from protein and sugars into triglycerides (1 glycerol + 3 fatty acids),
so that less insulin is required for storing sugars, which increasingly becomes harder as glycogen depots get filled up.
Sugar (for energy).
Strictly speaking, you can also just utilize protein for energy, or fat.
Protein is not a 'clean' fuel though, due to the nitrogen it contains (which may initially be used for non-essential amino acids, but is eventually converted to ammonium and urea).
Fats and sugars are just carbon, hydrogen and oxygen, which are oxidized for energy, by the oxygen that we inhale,
and all that ends up as carbondioxide (exhaled) and water (urine, sweat).
How much is too much cholesterol?
That is very much individually different.
You need to test that for yourself.
Maybe you can eat 2 dozens of eggs daily. Maybe you can eat only 2 eggs daily.
Your cholesterol levels will tell. (the difference between one year and the next)