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Fucose is one of the eight essential sugars the body requires for optimal function of cell-to-cell communication. The L form is the only common form of the sugar, while the D form is a synthetic galactose analogue. Fucose should not be confused with Fructose, which is a monosaccharide found in fruits and honey.

When taken orally, Fucose is readily absorbed from the small intestine and incorporated either directly or after metabolism into glycoproteins. Unabsorbed Fucose is metabolized by friendly intestinal bacteria.

Main functions of fucose include:
  • It is now known that Fucose glycoconjugates (glycoproteins and glycolipids) are an essential part of eliminating or reversing such disease processes as cancer, inflammation, and immunity.
  • Fucose concentrations are found in such areas as:
    1. at the junctions between nerves, implying that a deficiency could affect synaptic transmissions;
    2. in the proximal tubules of the human kidney, indicating the vital need for this saccharide for proper kidney function;
    3. in the testes, suggesting that it plays an important role in reproduction;
    4. in the outer layer of skin, where it may be involved in maintaining skin hydration.
  • Fucose is profoundly important for efficient neuron transmission in the brain. According to studies, Fucose is known to influence brain development and may also help improve the brainís ability to create long-term memories. Several studies have shown that, by inhibiting the Fucose-containing protein, amnesia developed. Research is ongoing but showing good promise.
  • Fucose is a powerful immune modulator. It is distributed in macrophages, which are critically important to immune function. There have been numerous well-documented benefits for its necessity in immune function ,especially that of an overactive immune system, the cause of autoimmune disorders. Fucose is showing promise in its ability to normalize immune function.
  • Fucose is particularly active in inflammatory diseases and has the ability to suppress such allergic skin reactions as contact dermatitis.
  • Fucose and another essential sugar, Mannose, have the ability to kill bacteria and to help fortify resistance to infection. This is particularly true of respiratory cells. New studies reveal that, because bacteria have lectins on their surfaces that stick to the hostís saccharide receptors, supplying the body with these essential sugars can help deflect host-binding so that an infection can either be foiled or lessened.
  • Researchers who injected Fucose into lab animals found a possible treatment for breast cancer. U-fucoidan, a complex polysaccharide found in brown seaweed, was able to kill cancer cells in vitro within 72 hours. Interestingly, the destruction was self-induced (apoptosis), suggesting that the sugars were able to break down the DNA within each cancer cell through enzyme action.
  • Fucose can be found in blood cell antigens, which are involved in determining blood type.

Fucose studies are also showing that it plays a significant role in many diseases, including cancer and its spread. Research is still ongoing but showing promise in the areas of inhibiting and reversing leukemia and breast cancer, including the suppression of tumor growth. Some studies have concluded that Fucose and Mannose appeared to be the most effective of the essential sugars when it came to slowing the growth of cancer cells.

Levels of Fucose are low in those with rheumatoid arthritis, and supplementation is showing promise as a harmless but surprisingly effective treatment. What is particularly interesting is the lower a personís level of Fucose (as well as Galactose, another essential sugar), the more advanced the disease.

Fucose metabolism appears to be altered in various diseases. Several studies have concluded that Fucose metabolism is abnormal in those with cystic fibrosis, diabetes, and during episodes of shingles, which is caused by a herpes virus. These studies go on to suggest that the sugar is active against other herpes viruses. In addition, the saccharide guards against respiratory tract infections and inhibits allergic reactions. Liver function and serum protein levels were also affected by a deficiency of Fucose. All these disorders, as well as many others, go back to immune function where fucose is showing to play a significant role.

In other studies, Fucose proved that it can be incorporated into certain areas of the body where and when it is most needed. For instance, Fucose incorporated into the photoreceptor layer of the retina, may help with the biosynthesis of rod cell glycoproteins. In psoriasis, fucose may play a significant role in the disease process because of altered glycoprotein distribution. Normally, skin keratinocytes and non-psoriatic cells have most of their fucose on the plasma membrane, whereas psoriatic cells retain most of their fucose within the cytoplasm. The list is endless for connecting the reversal and prevention of disease and the use of Fucose and other essential sugars.

Out of the 400 or so species of intestinal microbes found in the human intestine, one has been studied as being of particular interest in its relation to Fucose - Bacteroides thetaiotaomicron. Present from birth, this bacterium survives in the lower part of the gut and feeds on Fucose. Cells lining the intestine manufacture it and post it on the surface of the cell. During weaning, Fucose production stops but begins again if B. thetaiotaomicron is present, leading researchers at Washington University School of Medicine to conclude that the bacterium is able to communicate to the intestine that it requires Fucose for its food. Understanding this communication between microbes and human cells may help provide treatment when friendly intestinal bacteria are destroyed after the use of antibiotics, for instance.

Studies have shown that, when Fucose is given in extraordinarily high amounts, there were no side effects. The only remotely related oral toxicity that was found was from animals ingesting a diet composed of 20% Fucose. This amount appeared to reduce nerve conduction velocity as well as collagen production. What similar effects would be in humans has yet to be determined. However, microscopic examination of the liver, kidney, pancreas, and the sternal bone marrow of Fucose-treated rats revealed no abnormalities. According to available studies, it appears that oral doses as great as 34 grams in a healthy 150-pound adult is considered safe. Maximum blood levels would be expected one hour after ingestion and would be eliminated from the bloodstream eight to twelve hours later. Therefore, twice daily doses of any amount are recommended to maintain sufficient blood levels.

Fucose is readily found in several medicinal mushrooms, such seaweeds as kelp and wakame, and beer yeast.

The above information is provided for general educational purposes only. It is not intended to replace competent health care advice received from a knowledgeable healthcare professional. You are urged to seek healthcare advice for the treatment of any illness or disease.
Health Canada and the FDA (USA) have not evaluated these statements. This product is not intended to diagnose, treat, cure, or prevent any disease.
Back to Glyconutrients

View other essential sugars -
Mannose   :   Glucose  :   Galactose  :   Xylose  :  
N-Acetylglucosamine  :   N-Acetylgalactosamine  :  
N-Acetlyneuraminic Acid

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