Search Term: " EFAs "
Holiday Survival Tips!
December 15, 2016 08:59 AM
Deprivation does not work. The key to healthy eating is an ample and ready supply of the right foods. The right foods contain nutrients such as vitamins, minerals, protein, and nutrients like essential fatty acids (EFAs), carotenoids, and bioflavonoids, which have gotten so much attention in the nutrition research literature.
"Appreciate the presence of YOU in your life – your breath, your health, your generosity."
May 23, 2006 12:18 PM
Acai, one of the latest, hot new health food discoveries from the Amazon rainforest boasts some impressive credentials as a source of omega-6 and omega-9 fatty acids, vitamins A, C and E and more than 50 other antioxidants, especially anthocyanin—the powerhouse pigment found in red wine and blueberries.
Proponents of acai, which is actually the purplish fruit of Euterpe oleracea, a short palm found in abundance in Brazil, claim this superfood promotes healthy cholesterol, supports the immune system and protects the heart. With the publication of a new study in the Journal of Agricultural and Food Chemistry, they might be able to add “fights cancer” to that list as well.
The study, conducted at the University of Florida, tested the effect of pure acai juice-stripped of any lipids (EFAs) and cellulose material on HL-60 human leukemia cells in vitro. Researchers also evaluated five other extracts or “fractions” of the fruit, which contained different mixtures of antioxidants, for their effect on leukemia cells. They found that the extracts "reduce cell proliferation from 56% to 86%, most likely by damaging the cells enough to cause them to self-destruct."
Journal of Agricultural and Food Chemistry 54(4):1222-1229, 2006
Essential Fatty Acids - The “Good” Fats
June 25, 2005 08:24 PM
All About Fats
Some people shy away from anything that has the word “fatty” associated with it. They instantly think it will cause them to gain unnecessary weight. However, there are “good fats” and “bad fats,” and the beneficial ones can actually help decrease the desire to eat the harmful ones. Fats are important for health. Also known as lipids, they help balance the body’s chemistry and provide padding as protection for vital organs. Fats provide a source of energy for body processes, and they help with the transportation and absorption of fat-soluble vitamins such as A, D, E, and K. They are also a source of the vital nutrients known as essential fatty acids. Categories of fats include the following:
SATURATED FATS: All fats are composed of carbon, hydrogen, and oxygen molecules. The carbon atoms of fatty acids hold together in a chain-like fashion. These carbon atoms can attach hydrogen to them. When each place that can hold a hydrogen atom is filled and there is not room for even one more, they are described as saturated. The longer the chain, the harder the fat will be and thus, the higher its melting point. These types of long-chain fatty acids are found in “hard fats,” such as those in red meat, butter, cheese, sour cream and palm kernel and coconut oils. When a person’s diet is high in saturated fats, these fats tend to clump together in the body and form deposits, along with protein and cholesterol. They then lodge in the cells, organs and blood vessels. This can lead to many health problems, including obesity, heart disease, and breast and colon cancers.
UNSATURATED FATS: Unsaturated fats are called such because there are at least two adjacent carbon atoms on a chain which are not attached to hydrogen atoms. When at least two pairs of carbon atoms are empty it is known as a monounsaturated fatty acid. When two or more sets are empty, then it is referred to as a polyunsaturated fatty acid. A good rule of thumb is that the more saturated the fat, the more easily it will stay hard at room temperature.
ESSENTIAL FATTY ACIDS: Essential fatty acids (EFAs) are vital nutritional components that our bodies need for many functions. They are found in the seeds of plants and in the oils of cold-water fish. Essential fatty acids—sometimes referred to as vitamin F— cannot be made by the body; they must be sup-plied in the diet. However, at this time, the government has not officially established a Recommended Daily Intake (RDI). Many factors, including stress, allergies, disease, and a diet high in fried foods, can increase the body’s nutritional need for essential fatty acids.
MECHANISMS OF CHITOSAN FAT- BINDING
June 25, 2005 08:02 PM
MECHANISMS OF CHITOSAN FAT- BINDING
The exact way(s) that Chitosan prevents fat absorbtion is not fully understood but a number of experimental observations support two basic mechanisms. The first mechanism involves the attraction of opposite charges which can be compared to the attraction of opposite magnetic poles. The second entrapment mechanism can be compared to the effect of a net. In the first mechanism the positive charges on chitosan attract the negatively charged fatty acids and bile acids binding them to the indigestible chitosan fiber. This mechanism can explain why chitosan reduces LDL cholesterol levels.
Our bodies make bile acids in the liver using the cholesterol from LDL. When chitosan binds bile acids it increases the rate of LDL loss thus improving the LDL to HDL ratio. If enough bile acids are bound, the fats are not solublized, which prevents their digestion and absorption. The second mechanism (figure 2) describes a netting effect of chitosan fiber.
In this model the Chitosan wraps around fat droplets and prevents their being attacked and digested by lipid enzymes. Fats unprotected by Chitosan are digested and absorbed. The “netting” mechanism has been seen to operate in vivo. 108
Substances that Enhance the Action of Chitosan
Fibers can be likened to a tangled-up chain. Fibers must “unravel” in order for them to be of maximum benefit to us. “Unraveling” is especially critical for chitosan because each link has a hook on which to attach lipids. Chitosan can absorb an average of 4 to 5 times its weight in lipids. Reports of numbers above and below this range have also been reported and may well reflect the rate or extent of unraveling that had taken place. Fiber formulations can be prepared that unravel rapidly and swell quickly. These highly effective formulations are called superabsorbants. When certain substances are added to chitosan, its remarkable fat-binding ability can be significantly enhanced.
D-Ascorbic acid (erythorbic acid) and L-ascorbic acid are C-vitamins which enhance chitosan’s ability to bind lipids. Combining chitosan with ascorbic acid results in even less fat absorption and greater fecal fat losses.77,108 In one study the addition of ascorbic acid to a chitosan enriched diet increased fecal fat losses by 87 percent and decreased fat absorption by over 50 percent.77
Cholesterol oxides cause lesions in artery walls which predispose blood vessels to collect plaque. These dietary cholesterol oxides profoundly influence the initiation of heart disease.Free radicals can also contribute to the formation of cholesterol oxides which are even more likely to damage the heart. Cholesterol oxides have been found in deep-fried foods, powdered eggs, processed meats and in human blood itself. Consequently, taking antioxidants like ascorbic acid is vital to protect against the cellular damage this type of free radical causes.112
In feeding experiments with animals, adding citric acid to a chitosan enriched diet resulted in a decreased feed consumption.77 The most likely explanation for this effect is that the citric acid may be enhancing the swelling action of chitosan leading to a sense of fullness, producing satiety and appetite suppression.
Indoles are remarkable phytochemicals which have the ability to selectively activate certain Mixed Function Oxidases (MFOs).113 These MFO’s help balance estrogen metabolism and prepare dietary toxins for elimination before they are absorbed. The presence of fiber in the intestines provides a bulk agent to carry the metabolized toxins out of the body. Chelat ed Minerals The very best approach to weight loss is to nutritionally augment food choices with nutrient supplementation. Certain biochemical compounds are essential to promoting vigor during the process of thermogenesis. Chelated minerals act to bolster, support and protect the organ systems of the body.114,115
For example, when fat is burned, heat and energy are released. If a lack of certain minerals exists, energy levels will drop. Minerals help to transport needed nutrients to depleted areas of the body, thereby stemming off the fatigue we so often experience after eating a fatty meal. Even more importantly, free radicals are released whenever fat is consumed and burned and the presence of chelated minerals helps to expedite the removal of these metabolites and facilitate the availability of fuel for energy.
Essential Fatty Acids
Prostaglandins control and balance many body functions. The dietary building blocks for making prostaglandins are the essential fatty acids (EFAs). The role of prostaglandins in weight loss has been extensively discussed in a recent review.116 EFAs exert profound lipid-lowering effects.They reduce the synthesis of triglycerides and very low density lipoproteins (bad cholesterol) in the liver. EFA supplementation coupled with a low-cholesterol, low-saturated fat in diet produces a complementary effect in lowering serum lipid levels.117 Garcinia Cambogia ( Hydroxy Cit ric Acid) Garcinia Cambogia contains hydroxycitric acid (HCA). This form of citric acid inhibits the liver’s ability to make fats out of carbohydrates.118
Carbohydrates are converted to glycogen stores, not fat stores, giving the body a better energy reserve and an increase in stamina.119 Ephedra And Thermogenisis Thermogenesis means “creating heat.” This is one of the ways our bodies have of burning off excess calories and maintaining a constant weight.120 This is an area of weight management research that is being intensely studied. When we repeatedly yo-yo diet or abuse ourselves by eating too much, our thermogenic ability may be reduced. Numerous animal and human studies have confirmed the benefits of ephedra and methylxanthines in inducing weight loss and restoring thermogenic responsiveness.43,44,121