I copied this response from the Elimination Diet forum where I responded to a question about why fat is important in our diet.
Please note - I am not telling anyone to go hog wild on a full fat bacon, cheese and eggs 4 times a day diet!
But this may help some of you get over the fear of eating fat.
When examined honestly and accurately, the scientific evidence doesnt support the idea that "artery-clogging" saturated fats cause heart disease.
Saturated fats from healthy pastured animals play many important roles in our body chemistry:
They protect the liver from alcohol and other toxins, including pain killers
They enhance the immune system
Our hormones are made from saturated and cholesterol. So to have normal hormonal balance (which is required for burning fat), it is important to avoid 'low fat' foods.
Saturated fats constitute about 50% of the cell membranes. They are what gives our cells stiffness and integrity.
They play a vital role in bone health. For calcium to be effectively incorporated into our bones, at least 50% of our dietary fats should be saturated.
Saturated fats lower Lp(a), a substance in the blood that indicates greater risk of heart disease.
They have antimicrobial properties. They protect us against harmful microorganisms in the gut.
They are needed for the proper utilization of essential, omega fatty acids
Elongated omega-3 fatty acids are better retained in the tissues when the diet is rich in saturated fats.
Saturated (18-carbon stearic acid and 16-carbon palmitic acid) are ideal foods for the heart, which is why the fat around the heart muscle is highly saturated. The heart requires these fat reserves during stress.
The fat in clogged arteries is only about 26% saturated. The rest is unsaturated, of which more than half is polyunsaturated which comes from crappy vegetables oils including salad dressings and unhealthy 'health'' food oils like soy and canola.
They make foods taste better and help w satiety and reduce cravings...saturated fats have sustained human culture for over 2 million years.
So don't be afraid of eating animals fats as long as tehy come from clean, grass fed sources ...but you may not want to eat 'low fat' foods for optimal health and fat burning.
Antonio
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