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Fats ~ It’s What Should be For Dinner (and lunch and breakfast)

SOME INFORMATION ON NUTRITION:
LET’S LOOK AT THE MACRO NUTRIENT FAT

FAT FACTS

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Fats from animal and vegetable sources provide a concentrated source of energy in the diet; they also provide the building blocks for cell membranes and a variety of hormones and hormone-like substances.

Fats, as part of a meal, slow down absorption so that we can go longer without feeling hungry. In addition, they act as carriers for important fat-soluble vitamins A, D, E and K. Dietary fats are needed for the conversion of carotene to vitamin A, for mineral absorption and for a host of other processes.

Politically Correct Nutrition from the Diet Dictocrats (aka American Heart Association, American Medical Association, Food & Drug Administration…) is based on the assumption that we should reduce our intake of fats (low or no fat), particularly saturated fats from animal sources. Fats from animal sources also contain cholesterol, presented as the twin villain of the civilized diet.
The Lipid Hypothesis

The theory—called the lipid hypothesis—that there is a direct relationship between the amount of saturated fat and cholesterol in the diet and the incidence of coronary heart disease was proposed by a researcher named Ancel Keys in the late 1950’s. Numerous subsequent studies have questioned his data and conclusions.

Nevertheless, Keys’ articles received far more publicity than those presenting alternate views. The vegetable oil and food processing industries, the main beneficiaries of any research that found fault with competing traditional foods, began promoting and funding further research designed to support the lipid hypothesis.

The most well-known advocate of the lowfat diet was Nathan Pritikin. Actually, Pritikin advocated elimination of sugar, white flour and all processed foods from the diet and recommended the use of fresh raw foods, whole grains and a strenuous exercise program; but it was the lowfat aspects of his regime that received the most attention in the media. Adherents found that they lost weight and that their blood cholesterol levels and blood pressure declined.

The success of the Pritikin diet was probably due to a number of factors having nothing to do with reduction in dietary fat—weight loss alone, for example, will precipitate a reduction in blood cholesterol levels—but Pritikin soon found that the fat-free diet presented many problems, not the least of which was the fact that people just could not stay on it.
Today the Diet Dictocrats advise us to limit fats to 25-30% of the caloric intake, which is about 2 1/2 ounces or 5 tablespoons per day for a diet of 2400 calories. A careful reckoning of fat intake and avoidance of animal fats, they say, is the key to perfect health.

These “experts” assure us that the lipid hypothesis is backed by incontrovertible scientific proof. Most people would be surprised to learn that there is, in fact, very little evidence to support the contention that a diet low in cholesterol and saturated fat actually reduces death from heart disease or in any way increases one’s life span.

Clearly something is wrong with the theories we see in the popular press—and used to bolster sales of low fat concoctions and cholesterol-free foods. The notion that saturated fats per se cause heart disease as well as cancer is not only facile, it is just plain wrong. But it is true that some fats are bad for us. In order to understand which ones, we must know something about the chemistry of fats.

Fats—or lipids—are a class of organic substances that are not soluble in water. In simple terms, fatty acids are chains of carbon atoms with hydrogen atoms filling the available bonds.

Most fat in our bodies and in the food we eat is in the form of triglycerides, that is, three fatty-acid chains attached to a glycerol molecule.

Elevated triglycerides in the blood have been positively linked to proneness to heart disease, but these triglycerides do not come directly from dietary fats; they are made in the liver from any excess sugars that have not been used for energy.

The source of these excess sugars is any food containing carbohydrates, particularly refined sugar and white flour.

Fats are classified by degree of saturation and by length.

Classification of Fatty Acids by Degree of Saturation

Saturated:

Highly stable
Do not go rancid
easily
Solid or semi-solid at
room temperature
Non-essential
because the body can
make these from
Found in animal fats and tropical oils
Safe at higher heat

Mono-unsaturated

Relatively stable
Do not go rancid easily
Liquid at room
temperature
Non-essential because
the body makes these
from saturated fats
The monounsaturated fatty acid most commonly found in our food is oleic acid, the main component found in olive oil and oils from almonds, pecans, cashews, peanuts & avocados
Safe at low heat ie good for stir fries

Poly-unsaturated

Relatively unstable
Go rancid easily
Usually liquid
Two are essential: Linoleic Acid & Alpha-linolenic Acid, also called omega-6; and triple unsaturated linolenic acid, with three double bonds—also called omega-3. (The omega number indicates the position of the first double bond.)
Never heat or use with carbohydrates
Your body cannot make these fatty acids and hence they are called “essential.” We must obtain our essential fatty acids or EFA’s from the foods we eat
Found in animal fats and tropical oils
Found in flax, nuts, fish and seeds

Note: All fats and oils, whether of vegetable or animal origin, are some combination of saturated fatty acids, monounsaturated fatty acids and polyunsaturated linoleic acid and linolenic acid.

Approximately 30% of our
daily calorie intake needs to be
good fatty acids.

Omega-3s: Fish Oil, Flaxseed Oil, Wheat Germ, Walnut, Hemp

Omega-6s: Blackcurrant Seed, Evening Primrose, Sunflower Oil, Sesame Oil

Omega-9s: Extra Virgin Olive Oil, Hazelnut
Saturated: Palm Oil, Coconut Oil, Butter, Animal Fats from Pastured Animals
(Many of these contain a combination of fats)

Classification of Fatty Acids by Length

Researchers classify fatty acids not only according to their degree of saturation but also by their length.

Short-chain fatty acids have four to six carbon atoms. These fats are always saturated. Four-carbon butyric acid is found mostly in butterfat from cows, and six-carbon capric acid is found mostly in butterfat from goats. These fatty acids have antimicrobial properties—that is, they protect us from viruses, yeasts and pathogenic bacteria in the gut.

They do not need to be acted on by the bile salts but are directly absorbed for quick energy. For this reason, they are less likely to cause weight gain than olive oil or commercial vegetable. Short-chain fatty acids also contribute to the health of the immune system.

Medium-chain fatty acids have eight to twelve carbon atoms and are found mostly in butterfat and the tropical oils. Like the short-chain fatty acids, these fats have antimicrobial properties; are absorbed directly for quick energy; and contribute to the health of the immune system.

Long-chain fatty acids have from 14 to 18 carbon atoms and can be either saturated, monounsaturated or polyunsaturated. Stearic acid is an 18-carbon saturated fatty acid found chiefly in beef and mutton tallows. Oleic acid is an 18-carbon monounsaturated fat which is the chief component of olive oil.

Another monounsaturated fatty acid is the 16-carbon palmitoleic acid which has strong antimicrobial properties. It is found almost exclusively in animal fats.

The two essential fatty acids are also long chain, each 18 carbons in length. Another important long-chain fatty acid is gamma-linolenic acid (GLA) which has 18 carbons and three double bonds. It is found in evening primrose, borage and black currant oils.

Your body makes GLA out of omega-6 linoleic acid and uses it in the production of substances called prostaglandins, localized tissue hormones that regulate many processes at the cellular level.

Very-long-chain fatty acids have 20 to 24 carbon atoms. They tend to be highly unsaturated, with four, five or six double bonds.

In summary, our choice of fats and oils is one of extreme importance. Most people, especially infants and growing children, benefit from more fat in the diet rather than less. But the fats we eat must be chosen with care.

Avoid all processed foods containing newfangled hydrogenated fats and polyunsaturated oils.

Instead, use traditional vegetable oils like extra virgin olive oil and small amounts of unrefined flax seed oil. Acquaint yourself with the merits of coconut oil for baking and with animal fats for occasional frying.

Eat egg yolks and other animal fats with the proteins to which they are attached. And, finally, use as much good quality butter as you like, with the happy assurance that it is a wholesome—indeed, an essential—food for you and your whole family.