massive amounts of dangerous compounds called
aldehydes.
Aldehydes are by-products of fat oxidation and have
been found in elevated amounts in Alzheimer’s-riddled
brains. They may influence the susceptibility of proteins in
the brain to cross-link and clump together, thereby forming
the plaques that gunk up the brain and are characteristic of
the disease.^7 These chemicals also serve as powerful toxins
to the energy-generating mitochondria of the brain and
spinal cord.^8 Aldehyde exposure (resulting from consuming
rancid oils) directly impairs cells’ ability to generate energy.
This is pretty bad news for your brain, the chief energy
consumer in your body.
Even after one polyunsaturated oil–rich meal, circulating
markers of fat oxidation skyrocket by about 50 percent in
young people, while a fifteen-fold increase in markers of
rancid oils has been observed in older subjects.^9 Another
study noted that arteries become instantly stiffer and less
responsive to the demands of exercise after a similar meal.
These fats, far removed from their natural form, fuel the
underlying mechanisms of chronic disease, damaging your
DNA, causing inflammation in your blood vessels, and
raising your risk for several types of cancer.
These are the ominous oils to watch out for:
Canola oil Safflower oilCorn oil Sunflower oil