By now, anyone who has seen me or read my columns knows that I'm in favor of healthy fats playing a big role in our diets. But I have a special place in my heart for certain fats (and I hope they are in your hearts also, more on that later!) The fat that I want to talk about today comes from a natural wonder, the exotic and nutritious coconut. The fatty, oily white part of the coconut is approximately 50% made up of a single fat called lauric acid. And this remarkable fatty acid just might save your life one day.
In addition to coconut oil, lauric acid is present in human fat tissue, breast milk (in fact, lauric acid is the main antiviral and antibacterial substance in human breast milk), amniotic fluid, cows and goats milk, butter and palm kernel oil. Many properties make lauric acid unique. It is considered a medium chain fatty acid, and contributes less to fat accumulation than any of the other saturated fatty acids. In fact, some weight-loss regimens incorporate coconut oil into their programs. Lauric acid is easily absorbed and transported, to deliver directly, where it is converted to energy and to other metabolites rather than being stored as fat. Ketone bodies, which are produced by metabolism of lauric acid, are little energy batteries that can be used by the brain and the heart for immediate energy. There are even some reports demonstrating a lipid-lowering effect of lauric acid, and evidence that a diet containing lauric acid (as coconut oil) may be cardioprotective.
The cosmetic industry has long depended on lauric acid as a major ingredient. It has unique moisturizing properties. In one randomized double-blind controlled trial, extra virgin coconut oil was as effective and safe as mineral oil in moisturizing the condition known as xerosis, or dry rough scaly and itchy skin. In another study, adding coconut oil to existing lotion improved the moisture and elasticity of the skin. Monolaurin (made from lauric acid) is an important component of Epi-Shield, a natural skin cream that moisturizes, cleanses and conditions the skin. We have successfully utilized Epi-Shield (we use the brand name Lauri-Shield) in our practice for years.
Lauric acid can also be chemically converted in laboratories and factories to something called sodium laurel sulfate, or SLS. This substance is commonly used in many detergents, as it is able to scrub fats and oils effectively. The difficulty, is that it is also used in soaps and in dental toothpaste, and is implicated in damage to gums, canker sores, and even some cancers. So the form of lauric acid is very important in determining whether it’s a boon to our health, or a danger to be avoided.
Once fats are digested in the body, they become fatty acids, glycerols, and glycerides. Combining lauric acid with glycerol forms a substance called an ester. In this case the ester is known as glycerol mono laurate, better known as monolaurin. And it's the antimicrobial properties of monolaurin that make it one of nature's wonders. It turns out that monolaurin (and lauric acid, to a lesser extent) actually penetrates the lipid coating, or envelope, of viruses, and basically dissolves them, either preventing them from attaching to host cells, or directly promoting viral cell death. In one study performed by the CDC, monolaurin was over 99% effective in killing 14 viruses that were studied. In every case, electron microscopy showed severely damaged viral cells.
Some of the viruses that monolaurin has deactivated in the laboratory include RNA viruses such as coronavirus, pneumovirus and influenzavirus, as well as DNA viruses such as Herpes Simplex virus 1 and 2, and cytomegalovirus.
Because of its lipid penetrating properties, monolaurin is also lethal to many bacteria, especially Gram positive ones including Staph aureus (both sensitive and resistant strains), Streptococcus Groups A, B, F and G, and Listeria, as well as Gram negative Helicobacter Pylori (H.Pylori) and Hemophilus influenza. When a chelating agent (like EDTA) is added to assist in the breakdown of the bacterial lipid membrane, Gram negative bacteria are also susceptible to monolaurin’s pathogen-damaging effects.
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