Quenching the Fires of Inflammation
The simplest and most biochemically sound way of turning down the body's proinflammatory prostaglandins and cytokines is by restoring a balance between pro- and antiinflammatory foods. From a dietary standpoint, this means switching from vegetable oils to extra-virgin olive oil (high in antiinflammatory omega-9 fatty acids). It also means avoiding most processed (boxed, canned, or frozen) foods, because their makers frequently add omega-6 fatty acids. By eating simple unprocessed foods-such as baked chicken, a salad, and steamed vegetables-it becomes easier to consume a more balanced ratio of omega-6 and omega-3 fatty acids.
However, if you're like most people, you've been eating a diet high in omega-6 fatty acids and low in antioxidants for years. Simply restoring a balance is not enough to quickly offset accumulated damage, because the fatty acid composition of the body's cells reflects their dietary ratios. It's imperative to increase consumption of antiinflammatory fatty acids and antioxidants.
These are the supplements to emphasize:
· Omega-3 essential fatty acids. Found in fish oils, EPA and DHA are essential building blocks for the body's antiinflammatory prostaglandins (e.g., prostaglandin E1) and for turning off Cox-2 and the body's proinflammatory cytokines (IL-1, IL-6, and TNFa). In addition, omega-3 fatty acids block the activity of an enzyme that breaks down joint cartilage. Daily dosage: 3 or more grams.
· Gamma-linolenic acid. Although GLA is an omega-6 fatty acid, it has antiinflammatory properties. Relatively little GLA is converted to arachidonic acid and prostaglandin E2. Instead, GLA increases production of the antiinflammatory prostaglandin E1. Robert B. Zurier, M.D., of the University of Massachusetts Medical Center, Worcester, gave GLA supplements or placebos to 41 patients with rheumatoid arthritis. Two-thirds of those receiving GLA had a 25 percent reduction in their arthritic symptoms. Daily dosage: 2-3 grams.
· Vitamin E. Although Cox-2 and prostaglandin E2 levels rise with age, animal studies have shown that vitamin E supplements reverse the increase in Cox-2 and prostaglandin E2. Vitamin E also turns off nuclear factor-kB (NF-kB) and activator protein-1 (AP-1), compounds that turn on inflammatory genes. One recent study found that arthritics taking supplements of natural vitamin E (600 mg twice daily) for 12 weeks had their pain reduced by about half. Daily dosage: 400-800 IU.
· Vitamin C. Long recognized for its antiinflammatory properties, the effects of vitamin C are enhanced by other nutrients. In a study of people exposed to simulated sunlight, researchers found that vitamin C and E worked synergistically to reduce skin inflammation. In a cell study, Italian researchers noted that quercetin and vitamin C worked together to protect cells from inflammation-induced damage. Daily dosage: 1,000-2,000 mg.
· Polyphenols and Flavonoids. Researchers at Case Western Reserve University, Cleveland, recently reported that the antioxidant polyphenols in green tea had antiinflammatory properties by inhibiting Cox-2 and TNFa. Genistein inhibits prostaglandin E2 and Cox-2, and quercetin inhibits the activity of inflammation-promoting "adhesion" molecules. It's likely that Pycnogenol, grape seed extract, and other flavonoids work through similar mechanisms. Daily dosage: 25-500 mg.
· St. John's wort. Better known for its antidepressant effect, this herb also has antiinflammatory properties. In a laboratory experiment, researchers from the University of Frieburg, Germany found that hypericin, one of the constituents of St. John's wort, inhibited NF-kB, which activates proinflammatory genes. Daily dosage: Because product forms vary, follow label directions.
· Silymarin. A cell-culture study found that silymarin, the antioxidant extract of milk thistle, inhibited Cox-2 formation. This role of silymarin may partly explain why earlier cell-culture studies found it to inhibit the growth of prostate, breast, and skin cancers. Daily dosage: 100-200 mg.
· Ginger. With a long history as a folk medicine, ginger inhibits Cox-2 and another proinflammatory compound, 5-lipoxygenase. This simple herb and condiment contains almost 500 different compounds, many of which are antiinflammatory, according to Thomas M. Newmark and Paul Shulick, authors of Beyond Aspirin: Nature's Answer to Arthritis, Cancer & Alzheimer's Disease (Holm Press, Prescott, Arizona, 2000). Daily dosage: 100 mg.
· Rosemary. This common kitchen herb is rich in ursolic acid and many of its derivatives. In laboratory experiments, Swedish researchers found that the ursolic acid extract of rosemary was a potent inhibitor of Cox-2 activity. Daily dosage: 100 mg.
· Curcumin. A natural pigment that accounts for the yellow color of the spice turmeric, curcumin is also a powerful antioxidant. A recent cell study by researchers at Cornell University, New York, found that curcumin blocked the activity of Cox-2. The researchers suggested that this property might explain some of the herb's anticancer effects. Daily dosage: 2.8 mg.
· Cat's Claw. Known as una de gato and Uncaria tomentosa, this Peruvian herb has a long history as a remedy for inflammatory arthritis. Recent cell-culture and animal experiments at the Albany Medical College, New York, found that cat's claw inhibited inflammation by blocking the activity of NF-kB. Daily dosage: Because products vary, follow label directions.
The take home message in all this is relatively simple: pharmaceutical drugs, while providing rapid relief of symptoms, do not correct the underlying cause of chronic inflammation. The cause is frequently a diet that's either unbalanced or lacking in key nutrients. No drug can correct a nutritional deficiency or imbalance. Only nutrients can do that.
The information provided by Jack Challem and The Nutrition Reporter™ newsletter is strictly educational and not intended as medical advice. For diagnosis and treatment, consult your physician.
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