Standard voodoo nutrition food combining bullshit IMO. The body is
simply way to smart to make stuff like this work. I've only seen one
study looking specifically at food combining (they compared a food
combining diet, and Berardi gives the standard set of rules to a
non-food combining diet at the same weight loss calorie levels). End
result: no difference. The body simply has too many redundant pathways
to make stuff like this work.
Fats alone can stimulate TG synthesis (and FFA uptake into adipocytes)
in an insulin independent nature. So separating out fats from carbs
doesn't magically eliminate one's ability to get fat.
There's this little bitch of a metabolic pathway called the Acylation
Stimulation Protein (ASP) pathway which allows this to happen. It's
stimluated by one of the apoproteins on the chylomicrons and allows fat
storage even in the complete absence of lipoprotein lipase (LPL,
previously thought to be the rate limiting step for FFA uptake and fat
synthesis).
That is, the old picture was that insulin increased LPL activity (as
well as inhibiting HSL, hormone sensitive lipase which is the rate
limiting step for fat breakdown and release into the bloodstream) and
that's all that mattered for fat storage. But it's out of date.
Chlyomicrons (produced from teh digestion of fat in the gut) stimulate
FFA uptake and triglyceride synthesis into fat cells all by themselves,
even in the absence of insulin. Because our bodies hate us.
As well, it only takes tiny, tiny amounts of insulin to active fat
storage in fat cells (even the levels after an overnight fast inhibit
fat breakdown by half of the maximal rate) so the protein stimulated
insulin release will have an effect.