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Topic: Beta carotene

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Beta Carotene Beta carotene is safely stored in the body, where it serves as an antioxidant. Beta carotene is a pro-vitamin A—being converted to Vitamin A as needed by the body. Beta carotene also seems to serve in functions such as repairing DNA damage as beta carotene (not pro-vitamin A). www.nutrition-help.com /Vitamins_Beta_Carotene.htm

Beta Carotene Beta carotene provides a good lesson, especially because it was a star among supplements. Beta carotene is oxidized as it inactivates the free radicals from cigarette smoke, and its antioxidant capacity is "used up." In the process, it can turn into a pro-oxidant or form oxidized by-products, particularly if adequate amounts of vitamins C and E aren't present. Beta carotene is plentiful in vegetables and fruits, and is beneficial in this form. www.berkeleywellness.com /html/ds/dsBetaCarotene.php

Beta-carotene Beta carotene is a natural antioxidant which helps to protect the body from disease. Beta carotene can also help to strengthen the immune system, increase lung capacity, reduce the skin’s risk to sun and DNA damage as well as reduce cholesterol levels. Beta carotene is part of a larger family of nutrients called carotenoids, which are plant pigments with vitamin-like properties. www.cancernutritioncenter.com /beta-carotene.htm

Go Ask Alice!: Beta-carotene Although this study was not completed, researchers found 28% more lung cancer in those taking the beta- carotene - Vitamin A combination. A few large studies have recently been published stating that beta- carotene is not effective in reducing lung cancer. In a third study, the Physicians' Health Study at Harvard, 22,000 male physicians were given beta- carotene for 12 years. www.goaskalice.columbia.edu /0926.html

Low and high responders to pharmacological doses of ß-carotene: proportion in the population, mechanisms involved and consequences on ß-carotene metabolism -- Borel et al. 39 (11): 2250 -- Journal of Lipid Research Hennekens, C. H., Buring, J. E., Manson, J. E., Stampfer, M., Rosner, B., Cook, N. R., Belanger, C., Lamotte, F., Gaziano, J. M., Ridker, P. M., Willett, W., Peto, R. Lack of effect of long-term supplementation with beta carotene on the incidence of malignant neoplasms and cardiovascular disease. Gey, K. F., Moser, U. K., Jordan, P., Stahelin, H. B., Eichholzer, M., Ludin, E. Increased risk of cardiovascular disease at suboptimal plasma concentrations of essential antioxidants: an epidemiological update with special attention to carotene and vitamin C. Am. Hussein, L., El-Tohamy, M. Effect of supplementation with vitamin A or plant carotenes on plasma retinol levels among young Egyptian males. www.jlr.org /cgi/content/full/39/11/2250

beta-carotene Look for products that combine beta-carotene with other carotenes such as alpha-carotene, lycopene, lutein, zeaxanthin, and cryptoxanthin. Until more information is available, it's probably wise to get beta-carotene in supplement form only as part of a mixed complex, along with other health-promoting carotenoids. In addition to the numerous studies on beta-carotene's effectiveness for heart disease and cancer, researchers have been exploring the nutrient's potential for treating chronic fatigue syndrome, Alzheimer's disease, fibromyalgia, male infertility, and psoriasis. www.wholehealthmd.com /refshelf/substances_view/1,1525,10103,00.html

Beta-Carotene Another possibility is that beta-carotene alone is not effective, and the other carotenes found in fruits and vegetables may be more important for preventing cancer than beta-carotene. The situation with beta-carotene and heart disease is rather similar to that of beta-carotene and cancer. One researcher has suggested that taking beta-carotene supplements depletes the body of these other beneficial carotenes, and thereby causes a harmful effect. www.caromont.org /15952.cfm

Alternative Medicine - Herbs, Yoga and Nutritional Supplements - Health And Age Cholestyramine and probucol, medications used to lower cholesterol, can lower blood concentrations of dietary beta carotene by 30% to 40%, according to a 3-year trial in Sweden. Double blind cluster randomised trial of low-dose supplementation with vitamin A or beta carotene on mortality related to pregnancy in Nepal. In addition to these medications, mineral oil (used to treat constipation) may lower blood concentrations of beta-carotene and ongoing use of alcohol may interact with beta-carotene, increasing the likelihood of liver damage. www.healthandage.com /html/res/com/ConsSupplements/BetaCarotenecs.html

- Supplements In 1994, the results from a large (almost 30,000 subjects) supplementation study (ATBC – the Alpha- Tocopherol and Beta- Carotene study) showed not only that beta-carotene supplements (20mg/day for 5-8 years) did NOT prevent lung cancer in high risk subjects (long-time male smokers), but actually caused an increase in lung cancer risk by almost 20%. In 1996, another large study (CARET – the Beta- Carotene and Retinol Efficacy Trial) found virtually the same thing – with subjects receiving beta-carotene showing almost 50% more cases of lung cancer. Unfortunately, intervention studies that have looked at purified beta-carotene supplements (not mixed carotenoids) have not cleared up any of the confusion. www.supplementwatch.com /supatoz/supplement.asp?supplementId=40

Beta-carotene 33, 275-277, 1981] and [C. Tric and V. Lejeune, "Les carotenes fluorescent-ils?," This page and graphs were created by Scott Prahl. omlc.ogi.edu /spectra/PhotochemCAD/html/beta-carotene.html

{beta}-Carotene Does Not Change Markers of Enzymatic and Nonenzymatic Antioxidant Activity in Human Blood -- Castenmiller et al. 129 (12): 2162 -- Journal of Nutrition Greenberg E. R., Baron J. A., Karagas M. R., Stukel T. A., Nierenberg D. W., Stevens M. M., Mandel J. S., Haile R. Mortality associated with low plasma concentration of beta carotene and the effect of oral supplementation. Omenn G. S., Goodman G. E., Thornquist M. D., Balmes J., Cullen M. R., Glass A., Keogh J. P., Meyskens F. L., Valanis B., Williams J. H., Barnhart S., Hammar S. Effects of a combination of beta carotene and vitamin A on lung cancer and cardiovascular disease. Dartigues J. F., Dabis F., Gros N., Moise A., Bois G., Salamon R., Dilhuydy J. M., Courty G. Dietary vitamin A, beta carotene and risk of epidermoid lung cancer in south-western France. nutrition.org /cgi/content/full/129/12/2162

Arch Ophthalmol -- Abstract: A Randomized Trial of Beta Carotene and Age-Related Cataract in US Physicians, March 2003, Christen et al. 121 (3): 372 Arch Ophthalmol -- Abstract: A Randomized Trial of Beta Carotene and Age-Related Cataract in US Physicians, March 2003, Christen et al. of beta carotene supplementation on cataract or cataract extraction. However, among current smokers at baseline, beta carotene appeared archopht.ama-assn.org /cgi/content/abstract/121/3/372

Low and high responders to pharmacological doses of ß-carotene: proportion in the population, mechanisms involved and consequences on ß-carotene metabolism -- Borel et al. 39 (11): 2250 -- Journal of Lipid Research {beta}-Carotene and {beta}-Apo-14'-Carotenoic Acid Prevent the Reduction of Retinoic Acid Receptor {beta} in Benzo[a]pyrene-Treated Normal Human Bronchial Epithelial Cells www.jlr.org /cgi/content/abstract/39/11/2250

CNN - Vitamin supplement may help prevent prostate cancer - May 19, 1997 While the researchers say the finding on beta carotene and prostate cancer is intriguing, they're by no means in a position right now to recommend beta carotene supplements to the public. That, plus this new study, may ultimately show that beta carotene supplements could be helpful in the prevention of prostate cancer for those who don't eat right. BOSTON (CNN) -- Taking beta carotene supplements may lower the risk of prostate cancer in some men, according to early results from an ongoing study of more than 22,000 men who took either beta carotene or a placebo for 12 years. www.cnn.com /HEALTH/9705/19/prostate   (353 words)

Vitamin A & Carotene Oils Aisle - Natures Fare Natural Foods Beta carotene is known as provitamin A and is found in plants. Beta carotene is an excellent antioxidant and source of vitamin A, with no danger of buildup in the liver. BetaCareAll is 100% natural Beta Carotene mixed with carotenoids for optimal support, supplying the body with vitamin A when needed or acting as a protective antioxidant. www.naturesfare.com /cpu.cfm?RequestTimeout=500000&location=1&pn=1   (363 words)

Beta-Carotene Beta-carotene is a particularly important carotene from a nutritional standpoint, because the body easily transforms it to vitamin A. Effect of vitamin E and beta carotene on the incidence of angina pectoris. A randomized, 12-year primary-prevention trial of beta carotene supplementation for nonmelanoma skin cancer in the physicians' health study. healthlibrary.epnet.com /GetContent.aspx?token=e0498803-7f62-4563-8d47-5fe33da65dd4&chunkiid=21547   (3465 words)

Beta-carotene Beta carotene is part of a larger family of nutrients called carotenoids, which are plant pigments with vitamin-like properties. Although beta carotene is not toxic for the average person who doesn't smoke or drink heavily, it can cause some unpleasant side effects. Beta carotene is a natural antioxidant which helps to protect the body from disease. www.cancernutritioncenter.com /\beta-carotene.htm   (357 words)

Beta-Carotene Effect of vitamin E and beta carotene on the incidence of primary nonfatal myocardial infarction and fatal coronary heart disease. Thus, the argument is made that doses of beta-carotene used were inappropriately high and that beta-carotene, without other nutrients to protect it against oxidation, could not be expected to have a beneficial effect in the lungs of long-term smokers. Results from some human studies have shown improvement of measures of antioxidant activity (decreased copper-induced LDL oxidation, decreased DNA strand breaks and oxidized pyrimidine bases in lymphocytes, decreased serum lipid peroxide levels, decreased breath pentane, decreased serum malondialdehyde, increased red blood cell copper/zinc-superoxide dismutase activity) in those receiving relatively high intakes of beta-carotene. www.pdrhealth.com /drug_info/nmdrugprofiles/nutsupdrugs/bet_0032.shtml   (5202 words)

BBC NEWS Health Vitamins 'do not protect heart' According to their analysis, people who took beta carotene had a 0.4% increased risk of dying early and a 0.3% increased risk of dying from heart disease compared to those who did not take the supplement. "The use of vitamin supplements containing beta carotene and vitamin A, beta carotene's biologically active metabolite, should be actively discouraged because this family of agents is associated with a small but significant excess of all-cause mortality and cardiovascular death," he said. Vitamin E and beta carotene do not protect against heart disease and may even be harmful, according to doctors. news.bbc.co.uk /2/hi/health/2986922.stm   (486 words)

DAILY RECOMMENDATIONS: Vitamins Minerals & Trace Elements The definitive role of beta carotene/vitamin E is yet to be understood, but there is sufficient reason to use beta carotene in a dose of 50,000 units per day. They are not stored in the body as are beta carotene and vitamin E. B complex must be taken with food already in the stomach. Current clinical trials in prevention of cervix cancer and cancer of the lung and breast are using beta carotene. www.realtime.net /anr/anrrda.html   (1782 words)

Vitamin A information page. All about vitamin A and the role it plays in your diet. The animal form is divided between retinol and dehydroretinol whereas the vegetable carotene can be split into four very potent groups - alpha-carotene, beta-carotene, gamma-carotene and crypto-carotene. Liver, milk, egg-yolk, carrots, dark green leafy vegetables and yellow fruits are high in vitamin A or beta-carotene. With enough beta-carotene available in the body, the body can manufacture its own vitamin A. Vitamin A is required for www.anyvitamins.com /vitamin-a-info.htm   (826 words)

The Canary in the Cell: A Sentinel Role for {beta}-Carotene -- Jandacek 130 (3): 648 -- Journal of Nutrition Alpha Tocopherol Beta Carotene Cancer Prevention Study Group The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers. Salgo M. G., Cueto R., Winston G. W., Pryour W. Beta carotene and its oxidation products have different effects on microsome mediated binding of benzo[a]pyrene to DNA. Palan P. R., Mikhail M., Romney S. Decreased beta-carotene tissue levels in uterine leiomyomas and cancers of reproductive and nonreproductive organs. www.nutrition.org /cgi/content/full/130/3/648   (2793 words)

Beta-Carotene There are no well-documented therapeutic uses of beta-carotene, beyond supplying nutritional doses of vitamin A. Numerous observational studies have found that a high intake of foods rich in carotenes is associated with a lower incidence of lung cancer, other forms of cancer and heart disease. Effect of vitamin E and beta carotene on the incidence of angina pectoris. Beta-carotene proved ineffective for preventing cataracts in one large study, www.al-hikmah.org /beta-carotene.asp   (2793 words)

Vitamins Beta carotene is found in all fruits & vegetables red, orange or yellow in color, such as apricots, avocados, broccoli, cantaloupe, carrots, kale, mangoes, noni, peaches, peppers, persimmon, pumpkins, red peppers, spinach, squash, tomatoes. Contains over 150 nutraceuticals which include vitamin A, all the B vitamins, vitamin C, beta carotene, 20 amino acids, 9 of which are essential because they are not produced in the body, ursolic acid, scopoletin, pectin, calcium, magnesium & zinc. A nationwide clinical trial found participants who took 500 mg of vitamin C, 400 IU of vitamin E, 15 mg of beta carotene, 80 mg of zinc oxide with 2 mg of copper daily had their risk of advanced age-related macular degeneration (AMD) significantly reduced. www.tipsofallsorts.com /vitamins.html   (2793 words)

Beta-Carotene Effect of vitamin E and beta carotene on the incidence of primary nonfatal myocardial infarction and fatal coronary heart disease. It is unclear whether beta-carotene has any biological function for humans other than as a precursor for vitamin A. There is some evidence that beta-carotene may play a beneficial role in human nutrition beyond its provitamin A function. Ultraviolet light suppression of one type of immune function was significantly inhibited in a randomized trial of healthy older men taking 30 milligrams of beta-carotene daily for 47 days while simultaneously consuming a low-carotenoid diet. www.pdrhealth.com /drug_info/nmdrugprofiles/nutsupdrugs/bet_0032.shtml   (5202 words)

Sunny Delight: Ingredients: Beta-Carotene Natural beta-carotene is not known to have the effects of increased cancer in anyone. The second reason that beta-carotene is used in Sunny Delight is to boost its vitamin A content. Beta-Carotene as defined by Merriam-Webster's Online Dictionary is: "an isomer of carotene found in dark green and dark yellow vegetables and fruits." www.sackville.ednet.ns.ca /features/change/butler/sunnyd/beta-carotene.html   (459 words)

Search Results: Carotene Beta Carotene is a precursor of Vitamin A that may help with certain types of cancers, potent scavenger of toxic radicals, immune stimulating thymic supportive activity, an essential nutrient for normal ovarian function. Beta Carotene is a precursor of Vitamin A that may help with certain types of cancers, potent scavenger of toxic radicals, immune stimulating & thymic supportive activity, an essential nutrient for normal ovarian function.... Whole Body Defense Against Free Radicals from a Broad Spectrum of AntioxidantsWith more antioxidants than any product of its kind, Rainbow Light's Beta-Carotene Antioxidant System™ formula nourishes and protects a range of body tissues from free radi... vitamins.greatestgiftstore.com /search/0/20/Carotene.html   (423 words)

Pumpkins and More - Pumpkin Nutrition Beta-carotene is one of the plant carotenoids converted to vitamin A in the body. In the conversion to vitamin A, beta carotene performs many important functions in overall health. Current research indicates that a diet rich in foods containing beta-carotene may reduce the risk of developing certain types of cancer and offers protect against heart disease. www.urbanext.uiuc.edu /pumpkins/nutrition.html   (127 words)

beta-carotene In addition to the numerous studies on beta-carotene's effectiveness for heart disease and cancer, researchers have been exploring the nutrient's potential for treating chronic fatigue syndrome, Alzheimer's disease, fibromyalgia, male infertility, and psoriasis. Look for products that combine beta-carotene with other carotenes such as alpha-carotene, lycopene, lutein, zeaxanthin, and cryptoxanthin. Until more information is available, it's probably wise to get beta-carotene in supplement form only as part of a mixed complex, along with other health-promoting carotenoids. www.wholehealthmd.com /refshelf/substances_view/1,1525,10103,00.html   (1178 words)

{beta}-Carotene and Other Carotenoids as Antioxidants -- Paiva and Russell 18 (5): 426 -- Journal of the American College of Nutrition Anonymous: The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers. Rapola JM, Virtamo J, Haukka JK, Heinonen OP, Albanes D, Taylor PR, Huttunen JK: Effect of vitamin E and beta carotene on the incidence of angina pectoris. The Alpha-Tocopherol, Beta Carotene Cancer Prevention Study Group. www.jacn.org /cgi/content/full/18/5/426   (4565 words)

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