Despite containing about 42% of
palmitic acid, many studies in human and
animal models reported that palm oil
does not behave like a saturated fat; the
cholesterol-raising potential of palm oil is
often much weaker than predicted by
either the Keys or Hegsted equations. We
now have evidence that the structure of
the palm fat molecule, and the intrinsic
distribution of the tocotrienols and
carotenoids present in the oil, can reduce
atherosclerosis.
In the present study, Kritchevsky and
associates from The Wistar Institute in
Philadelphia compared the atherogenic
properties of red palm oil (RPO), refined
palm oil (PO), and randomised PO. The
test fats were incorporated at 32% kcal
into atherogenic semipurified diets
containing 0.2% cholesterol and fed to rabbits for 65 days, at the end of which
atherosclerotic lesions at the aortic arch
and thoracic aorta were measured.