Joe Graedon, M.S. and Teresa Graedon, Ph.D.
See book keywords and concepts |  The natural products quercetin and bromelain may help stabilize mast cells and prevent histamine release.
• Cromolyn (NasalCrom) is an OTC remedy that also stabilizes mast cells. It should be used preventively before exposure to allergens occurs. Cromolyn does not cause drowsiness.
•Oral antihistamines can control symptoms, but they may also make you dangerous on the highways. Even nonsedating products may interfere with driving ability. Generic loratadine (Claritin) is now available without a prescription. |
Joseph E. Mario
See book keywords and concepts |  Purifies the blood, for arteriosclerosis, angina, anemia, high blood pressure, arthritis; liver and kidney ailments, jaundice, bladder stones, hydropsy, lowers acid urine; facilitates the secretion of gastric juice (high in Chlorine), good in gastrointestinal irritations, food poisoning, a laxative, enhances the absorption of Bioflavonoid quercetin. Helps menses. Contains Vitamins A; B-Complex; Vitamin C; high Carbohydrates, 12% fruit sugar, glucose; citric, tartaric and malic acids; a bit of albumin; salts; and low in Minerals. |
by Michael Murray, N.D. and Joseph Pizzorno, N.D.
See book keywords and concepts | | Quercetin is a popular flavonoid supplement often used in the treatment of allergies.
• Citrus bioflavonoids, formed by two flavonoids joined together, are found in oranges, limes, lemons, and grapefruit. Besides providing antioxidant activity, they appear to improve blood circulation and increase the integrity of capillaries. Citrus bioflavonoids are often included in vitamin C supplements because they enhance the activity of vitamin C.
• Isoflavonoids are another category with a similar structure to the 4-oxo-flavonoids and some have estrogenic activity. | | NUTRITIONAL HIGHLIGHTS
Buckwheat contains two flavonoids with significant health-promoting actions: rutin and quercetin. Buckwheat is also a very good source of magnesium (it has 86 grams of magnesium in a 1-cup serving) and has a good supply of manganese, fiber, phosphorus, pantothenic acid, and protein. Finally, the protein in buckwheat is a very-high-quality protein, containing all eight essential amino acids. In this way, buckwheat is quite complementary to other grains and will provide an even more complete protein when combined with them. |
Joe Graedon, M.S. and Teresa Graedon, Ph.D.
See book keywords and concepts | | Take quercetin and bromelain
• Try NasalCrom (cromolyn) spray to prevent allergy symptoms
þ???
• Look for loratadine, an over-the-counter antihistamine
þ???
• Ask your doctor about a steroid nasal spray
þ????
• Consider pseudoephedrine for symptomatic relief
Breathing is basic. Most of the time we take it for granted. But if your nose is congested and your sinuses are stopped up, you are miserable. For one thing, your head feels as if it's full of cotton. |
Ben-Erik van Wyk
See book keywords and concepts |  One of the most common dietary flavonoids is quercetin, a flavonol found in of cancer in people with a high consumption of garlic. The glucosinolates are a group of compounds that are enzymatically converted to volatile and pungent isothiocyanates when chewed or processed. There is evidence that regular consumption of glucosinolates may offer protection against cancer. Tannins are astringent substances that are considered to be detrimental to good digestion, at least in animals. |
volker schulz and Rudolf Hansel
See book keywords and concepts |  Key Constituents, Analysis, Pharmacokinetics
The monograph published by Commission E lists the following characteristics of medicinal ginkgo extracts: 22-27 % flavonoid glycosides, determined by high-performance liquid chromatography (HPLC) as quercetin, kaempferol, and isorhamnetin and calculated as acylflavonoids with the molecular weight Mr = 756.7 (quercetin glycosides) and Mr = 740.7 (kaempferol glycosides); 5-7 % terpene lactones, consisting of about 2.8-3.4 % ginkgolides A, B, and C and 2.6-3.2 % bilobalide; and less than 5 ppm ginkgolic acids. |
by Michael Murray, N.D. and Joseph Pizzorno, N.D.
See book keywords and concepts | | Other constituents include flavonoids (primarily quercetin); phenolic acids, such as ellagic, caffeic, sinapic, and p-coumaric; sterols; saponins; pectin; and volatile oils.
Although not nearly as valued a medicinal agent as garlic, onion has been used almost as widely. Onions possess many of the same positive effects as garlic (see "Garlic"). There are, however, some subtle differences that make one more advantageous than the other for certain conditions. |
Robert Hass, M.S.
See book keywords and concepts |  Quercetin and Other Bioflavonoids: quercetin, a disease-fighting compound found in oranges, cranberries, strawberries, apples, and grapes, exerts its anticancer effects in human breast, ovarian, leukemic, and colon cancer cells. quercetin inhibits the growth of malignant cells in three ways by:
1. Inhibiting cell metabolism
2. Blocking estrogen binding sites on cells, reducing the growth stimulus that leads to cancer cell proliferation.
3. Triggering apoptosis in tumor cells, a condition in which a damaged cell commits suicide, thereby preventing the possibility that it could turn cancerous. |
Jack Challem
See book keywords and concepts |  Other antioxidants, particularly flavonoids, such as Pycnogenol and quercetin, have potent antiinflammatory properties. They work in part by reducing the activity of genes involved in inflammation, including those that program adhesion molecules.
Osteoporosis
What Happens
Osteoporosis refers to a serious reduction in the density of bone, which increases the risk of fractures and falls. According to the National Osteoporosis Foundation, 10 million Americans have osteoporosis, and 18 million more have low bone mass (or low bone-mineral density). | | The best-known antioxidants are vitamins E and C, but other important ones include carotenoids (such as lutein, lycopene, and beta-carotene), flavonoids (such as quercetin and hesperidin), selenium, N-acetylcysteine, and alpha-lipoic acid.
Most antioxidant research has focused on how these nutrients quench, or neutralize, harmful molecules called free radicals. As discussed in chapter 2, free radicals are unbalanced molecules that lack one electron in what is normally a pair. | | A large family of plant-based antioxidants; the flavonoid quercetin binds with DNA and may protect it against cancerous changes.
N-Acetylcysteine. Regulates many genes and also protects them from free-radical damage.
MlNERAtS
Chromium. Essential for the body's use of the hormone insulin, which influences genes involved in fat- and muscle-cell production.
Selenium. Needed for the normal functioning of the p53 cancer-suppressing gene.
Zinc. Provides key structural components, known as zinc fingers, to many genes. |
Earl L. Mindell, RPh, PhD with Virginia Hopkins, MA
See book keywords and concepts | | Diabetic Eye Disease
Diabetics should use 1,000 to 1,500 mg of quercetin and 200 meg of chromium a day. quercetin inhibits an enzyme that may be directly responsible for the formation of sugar cataracts, while chromium helps to balance blood sugar.
To slow the progression of cataracts, include plenty of tofu, eggs, asparagus, onions, garlic, carrots, cantaloupe, yams, corn, and leafy greens in your diet. Make sure you're getting 50 mg of riboflavin in your multivitamin, or add an extra riboflavin supplement. |
Thomson Healthcare, Inc.
See book keywords and concepts |  Biflavonoides (0.4-1.9%): for example, amentoflavone, bilo-betin, 5-methoxybilobetin, ginkgetin, isoginkgetin
Proanthocyanidins (8-12%)
Trilactonic diterpenes (0.06-0.23%): ginkgolide A, B, C Trilactonic sesquiterpene bilabolids (0.04-0.2%)
EFFECTS
Ginkgo has shown anti-inflammatory, cognitive-promoting, antioxidant, and vascular effects. Ginkgo has been proved ineffective in the treatment of cocaine-dependency, depression, multiple sclerosis, and ulcerative colitis. Ginkgo has proved effective against peripheral occlusive arterial disease (Schweizer & Hautmann, 1999). | | Triterpenes: including tormentoside
EFFECTS
Due to its tannin and flavonoid glycoside content, the drug is astringent in effect. indications and usage
Unproven Uses: Folk medicine uses include stomach pains and diarrhea.
The effect appears to be plausible because of the flavonoid glycoside content, but is unproven. precautions and adverse reactions
No health hazards are known in conjunction with the proper administration of designated therapeutic dosages. The ingestion of larger dosages can lead to digestive complaints and constipation, due to the high tannin content. |
Andrew Pengelly
See book keywords and concepts |  These flavonoids include quercetin, kaempferol and myricitin as well as the catechin-type condensed tannins found in black tea (Hertog et al. 1993).
OH
OH O kaempferol—a flavonol
Epidemiological studies with dietary flavonoids have also demonstrated an inverse association with incidence of stroke (Rice-Evans 2001). Antitumour activity has been demonstrated in flavonoids. Nomilin in citrus induces glutathione-S-transferase (GST), which aids in detoxification of carcinogens. quercetin inhibits cytotoxic
T lymphocytes in vitro. |
Robert Hass, M.S.
See book keywords and concepts | | University of Western Ontario in Canada found that a particular limonoid called nomilin was an especially powerful inhibitor of cancer in laboratory studies.
• quercetin and Other Bioflavonoids: quercetin, a disease-fighting compound found in oranges, cranberries, strawberries, apples, and grapes, exerts its anticancer effects in human breast, ovarian, leukemic, and colon cancer cells. quercetin inhibits the growth of malignant cells in three ways by:
1. Inhibiting cell metabolism
2. |
Amarjit S. Basra
See book keywords and concepts |  Standards of these were tested for activity and it was established that kaempferol was responsible for the activity. quercetin was also antigiardial but not and amebic.16
These examples advocate the enormous potential of medicinal plants to act in the GI tract against microbial infections. The active substances in these plants may also present an array of novel chemical structures that may be used for the development of a new arsenal of synthetic drugs. Indeed, many hundreds of plants worldwide are used in traditional medicine as treatments for bacterial infections. |
Robert Hass, M.S.
See book keywords and concepts | | Quercetin and Other Bioflavonoids: quercetin, a disease-fighting compound found in oranges, cranberries, strawberries, apples, and grapes, exerts its anticancer effects in human breast, ovarian, leukemic, and colon cancer cells. quercetin inhibits the growth of malignant cells in three ways by:
1. Inhibiting cell metabolism
2. Blocking estrogen binding sites on cells, reducing the growth stimulus that leads to cancer cell proliferation.
3. Triggering apoptosis in tumor cells, a condition in which a damaged cell commits suicide, thereby preventing the possibility that it could turn cancerous. |
James F. Balch, M.D. and Mark Stengler, N.D.
See book keywords and concepts |  Quercetin in men with category III chronic prostatitis: A preliminary prospective, double-blind placebo-controlled trial. Urology 54:960-63.
Psoriasis
Psoriasis, a common skin disorder, occurs when skin cells replicate too quickly. The skin produces new cells at about ten times its normal rate, but also it continues to slough off old ones at its usual, slower pace. With nowhere else to go, the new cells pile up under the surface, creating patches of red swollen skin covered with silvery or whitish scales. |
Gabriel Cousens, M.D.
See book keywords and concepts |  Resveratrol, quercetin, and the bioflavonoids can easily be gotten from substances other than red wine. Healthful sources of bioflavonoids include grapes, onion, garlic, and the white inner peel of citrus fruits. The bioflavonoids also promote the activation of the gene expression of phase-two detoxification enzymes in the liver. Bioflavonoids are a class of phytonutrients that contain subclasses, including isoflavones, flavones, and flavenols. These are very important antioxidants; they affect hormone modulation, anti-inflammatory protection, and gene expression of our detoxification enzymes. | | Red wine also has a number of phenolics, the most important being resveratrol and quercetin, which alter gene expression and enhance phenotypic expression to protect against blood clot formation as in heart disease. Resveratrol also has certain anti-aging qualities that are recently being touted to mimic the calorie restriction effect. However, red wine also has the downside of being alcohol. Alcohol does many things to disregulate and undermine healthy gene expression, particularly in the neurotransmitter systems, as well as other systems in the body. | | Bioflavonoids, of which quercetin is one, are perhaps some of the most important modifiers of gene expression, in addition to being antioxidants.
This discussion takes us into the whole question of the use of wine and black and Chinese green teas, which are very high in bioflavonoids. The Chinese green teas also contain the class of bioflavonoids called cate-chins. These catechins are particularly strong antioxidants. Wine has a whole lot of flavonoids. |
Patrick Holford
See book keywords and concepts |  At the prestigious Mayo Clinic, research has been conducted into quercetin to help treat and prevent prostate cancer, the fastest-rising cancer, now affecting one in six men at some point in their life. In the words of the Mayo Clinic researcher Dr. Nianzeng Xing, "Our laboratory results showed quercetin blocks the androgen activity in androgen-responsive human prostate cancer cells. By blocking the androgen activity," he continued, "the growth of prostate cancer cells can be prevented or stopped. |
the Editors of PREVENTION
See book keywords and concepts |  A lot of people who use quercetin regularly get good results," says Kathi Head, N.D., a Sandpoint, Idaho, naturopathic physician and an editor of Alternative Medicine Review. You can start with the lower dose and increase to the higher dose after a few weeks if you don't see a benefit, she says. If after 6 weeks, you still don't see results, quercetin may not be effective for you, but if you find that it helps, it's safe to take it daily on an ongoing basis.
Quercetin is especially helpful for hay fever, says Dr. |
Thomson Healthcare, Inc.
See book keywords and concepts | | Hydroxycoumarins: including scopoletin, umbelliferone, es-culetin
Carotinoids: chief components lutein, zeaxanthine
Volatile oil (0.2%): chief components alpha-cadinol, T-cadi-nol, fatty acids
Water-soluble polysaccharides (15%): rhamnoarabinogalac-tans, arabinogalactans
Polyynes
COMPOUNDS: MARIGOLD HERB
Triterpene saponins Flavonoids Carotinoids Volatile oil
EFFECTS: MARIGOLD HERB
The astringent and granulation-promoting effect may be attributable to the essential oil, saponins, and the amaroid loliolid. Efficacy has not been documented with valid data. |
Byron J. Richards, CCN
See book keywords and concepts |  We combine them with quercetin and curcumin to further reduce inflammation and help turn off excess NF kappaB.673 674,675
We may add a nutrient such as hyaluronic acid. Hyaluronic acid signals genes to help synthesize new cells as well as act as a connective tissue raw material itself.676 Our goal is not only to reduce pain but also to improve the response to exercise, especially to find a level of support that helps a person do strength-training exercise. |
Joseph E. Mario
See book keywords and concepts | | Some scavenge free radicals; some chelate metals so they don't react with Oxygen; counter bacteria, viruses, allergies, free radicals, and ulcers directly with Bioflavones, quercetin, Catechin, flavonoid Luteolin, Morin, Fisetin, Procyanidin, and others. Counter urinary infections with Proanthocyanidins and Flavonols in Cranberries; neutralize free radicals with Pycnogenol/Pronogenol from Pine bark, or take advantage ofthe more active antioxidant Proanthocyanidin B2-3-0 Gallate from Grape seed extract. | | Quercetin with 100 mg. absorption-aid Bromelain 5-7 times a day). A powerful antioxidantthat inhibits Low Density Lipoprotein (LDL) cholesterol oxidation forming cells that initiate artery blockage, reduces platelet stickiness, lowers clotting, inhibits herpes virus (and attendant) atherosclerosis, coronary and heart thrombosis. Take on an empty stomach. Iftoomuchistakentooquickly,may cause mild upset stomach. Nottoxic or carcinogenic up to 10% of diet in rodent tests. | | Quercetin, tea, onions and apples), high blood pressure (4 weeks, capillaries), hypertension; menstrual bleeding, hot flashes, chronic habitual miscarriages (200 mg. 3 times daily), post pregnancy bleeding; arteriosclerosis, varicose veins (with Vitamins C and E); ulcers, hemorrhoids, eczema, psoriasis, rheumatoid arthritis (slows production ofhyaluronidase), and bursitis, keeps Col lagen healthy, membrane stabilizer, helps edema. |
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