JAMA 1994;272:1413-20. Sankaranarayanan, R., Mathew, B., Varghese, C., Sudhakaran, P. R., Menon, V., Jayadeep, A., Nair, M. K., Mathews, C., Mahalingam, T. R., Balaram, P., and Nair, P. P. Chemoprevention of oral leukoplakia with vitamin A and beta carotene: an assessment. Aliment.Pharmacol.Ther. Wang A, Han J, Jiang Y, Zhang D. Association of vitamin A and -carotene with risk for age-related cataract: a meta-analysis. Do antioxidant micronutrients protect against the development and progression of knee osteoarthritis? Hercberg, S., Ezzedine, K., Guinot, C., Preziosi, P., Galan, P., Bertrais, S., Estaquio, C., Briancon, S., Favier, A., Latreille, J., and Malvy, D. Antioxidant supplementation increases the risk of skin cancers in women but not in men. The effect of alpha-tocopherol and beta-carotene supplementation on COPD symptoms. 2003;116:15-19. Diet and prostate cancer risk in a cohort of smokers, with a specific focus on calcium and phosphorus (Finland). J.Natl.Cancer Inst. Br.J.Cancer 1988;57:416-417. de, Selys R., Decroix, J., Frankart, M., Hassoun, A., Willocx, D., Pirard, C., and Bourlond, A. Kamangar, F., Qiao, Y. L., Yu, B., Sun, X. D., Abnet, C. C., Fan, J. H., Mark, S. D., Zhao, P., Dawsey, S. M., and Taylor, P. R. Lung cancer chemoprevention: a randomized, double-blind trial in Linxian, China. Malila, N., Taylor, P. R., Virtanen, M. J., Korhonen, P., Huttunen, J. K., Albanes, D., and Virtamo, J. 2007;55:35-42. WebEl exceso de flemas y mocos puede causar congestin, tos y problemas respiratorios. Intenta que las comidas sean Corbett, M. F., Herxheimer, A., Magnus, I. Bjelakovic, G., Gluud, L. L., Nikolova, D., Bjelakovic, M., Nagorni, A., and Gluud, C. Meta-analysis: antioxidant supplements for liver diseases - the Cochrane Hepato-Biliary Group. Age-Related Eye Disease Study Research Group. Nesaretnam K, Radhakrishnan A, Selvaduray KR, et al. JAMA 3-6-1996;275:693-698. Jula, A., Marniemi, J., Huupponen, R., Virtanen, A., Rastas, M., and Ronnemaa, T. Effects of diet and simvastatin on serum lipids, insulin, and antioxidants in hypercholesterolemic men: a randomized controlled trial. Roodenburg AJ, Leenen R, van het Hof KH, et al. Un frasco pequeo de 2.5 onzas de papas dulces o zanahorias contiene A., Meyer-Wenger, A., Moser, U., Wright, A., Southon, S., Thurnham, D., Chopra, M., van den, Berg H., Olmedilla, B., Favier, A. E., and Roussel, A. M. No significant effects of lutein, lycopene or beta-carotene supplementation on biological markers of oxidative stress and LDL oxidizability in healthy adult subjects. Patrick L. Beta-carotene: the controversy continues. [Erythropoietic protoporthyria. Ann.Med. A. Lehmann, P., Scharffetter, K., Kind, P., and Goerz, G. [Erythropoietic protoporphyria: synopsis of 20 patients]. Annu Rev Public Health 1998;19:73-99. N Engl J Med 1993;328:1450-6. Ophthalmology 2008;115:822-829. Haeger-Aronsen, B., Krook, G., and Abdulla, M. Oral carotenoids for photohypersensitivity in patients with erythrohepatic protoporphyria, polymorphous light eruptions and lupus erythematodes discoides. Cochrane.Database.Syst.Rev. No author. Plummer, M., Vivas, J., Lopez, G., Bravo, J. C., Peraza, S., Carillo, E., Cano, E., Castro, D., Andrade, O., Sanchez, V., Garcia, R., Buiatti, E., Aebischer, C., Franceschi, S., Oliver, W., and Munoz, N. Chemoprevention of precancerous gastric lesions with antioxidant vitamin supplementation: a randomized trial in a high-risk population. Sasazuki, S., Sasaki, S., Tsubono, Y., Okubo, S., Hayashi, M., Kakizoe, T., and Tsugane, S. The effect of 5-year vitamin C supplementation on serum pepsinogen level and Helicobacter pylori infection. B. 2007;66:483-492. Contiene calcio, vitaminas A y K, betacaroteno, bromelina y papana que favorecen la digestin y hacen que disminuyan las molestias provocadas por la acidez. Schaumberg, D. A., Frieling, U. M., Rifai, N., and Cook, N. No effect of beta-carotene supplementation on risk of nonmelanoma skin cancer among men with low baseline plasma beta-carotene. WebEl aislamiento de -caroteno a partir de frutas abundantes en carotenoides se realiza comnmente mediante cromatografa en columna. 2010;:CD003650. Los carotenoides, como el betacaroteno, son pigmentos presentes en las frutas y en las verduras, que les proporcionan su color amarillo, naranja o rojo. Krook, G. and Haeger-Aronsen, B. Erythrohepatic protoporphyria and its treatment with beta-carotene. Richer S, Stiles W, Statkute L, et al. Nutrients 2021;13:3039. Renner, S., Rath, R., Rust, P., Lehr, S., Frischer, T., Elmadfa, I., and Eichler, I. Am J Clin Nutr 2000;71:1570-6. Loane, E., Kelliher, C., Beatty, S., and Nolan, J. M. The rationale and evidence base for a protective role of macular pigment in age-related maculopathy. J.Lab Clin.Med. B. Association between antioxidant vitamins and asthma outcome measures: systematic review and meta-analysis. Dagnelie PC, Schuurman AG, Goldbohm RA, Van den Brandt PA. J Nutr 1997;127:1636S-45S. J Epidemiol Community Health 1998;52:468-72. Zaynoun, S. T., Hunter, J. 9. Todos los derechos reservados. La mayora de las personas con un exceso de vitamina A presentan dolor de cabeza y erupcin cutnea. Christen, W., Glynn, R., Sperduto, R., Chew, E., and Buring, J. Age-related cataract in a randomized trial of beta-carotene in women. Elinder LS, Hadell K, Johansson J, et al. Dietary intake of vitamin A, lung function and incident asthma in childhood. La mayora de las personas se han recuperado por completo cuando dejan de tomar los suplementos de vitamina A. Dermatologica 1972;145:389-394. 2006;90:847-851. Los sntomas tardos incluyen cefaleas intensas y debilidad general. Mathews-Roth, M. M., Pathak, M. A., Parrish, J., Fitzpatrick, T. B., Kass, E. H., Toda, K., and Clemens, W. A clinical trial of the effects of oral beta-carotene on the responses of human skin to solar radiation. Grodstein, F., Kang, J. H., Glynn, R. J., Cook, N. R., and Gaziano, J. M. A randomized trial of beta carotene supplementation and cognitive function in men: the Physicians' Health Study II. 1984;1:318-321. Arterioscler Thromb Vasc Biol 2000;20:230-5. Zhonghua Yu Fang Yi.Xue.Za Zhi. O'Neil, C., Shevill, E., and Chang, A. Nutr.Cancer 2011;63:1196-1207. 12-19-2012;104:1905-1916. 2003;10:1895-1901. Cancer Causes Control 2000;11:617-26. Klin.Monbl.Augenheilkd. 2011;13:1085-1099. J Nutr Sci. Lee, I. M., Cook, N. R., Manson, J. E., and Buring, J. E. Randomised beta-carotene supplementation and incidence of cancer and cardiovascular disease in women: is the association modified by baseline plasma level? B. Vitamin A supplementation for cystic fibrosis. Acta Med Iran. Metabolic mechanisms of drug-nutrient interactions. WebEructos: cmo eliminar el exceso de aire. J Nutr 2000;130:2675-82. Cancer Res. A. Br.J.Dermatol. A., Ramsay, C. A., and Kobza-Black, A. Peeling. Arthritis Rheum 1996;39:648-56. 2020;112:620-626. Eur J Cancer 2000;36:636-46.. Graat JM, Schouten EG, Kok FJ. Druesne-Pecollo, N., Latino-Martel, P., Norat, T., Barrandon, E., Bertrais, S., Galan, P., and Hercberg, S. Beta-carotene supplementation and cancer risk: a systematic review and metaanalysis of randomized controlled trials. Si los nios toman una dosis muy alta de forma accidental, la toxicidad puede producirse con rapidez. Int.J.Cancer 10-15-2010;127:1875-1881. Am.J.Epidemiol. Richer, S. Multicenter ophthalmic and nutritional age-related macular degeneration study--part 2: antioxidant intervention and conclusions. En ocasiones, la toxicidad se debe a la ingestin de determinadas formulaciones de vitamina A en dosis altas para tratar el acn grave u otros trastornos de la piel. La mayora de las personas afectadas se recuperan completamente. B., Rohan, T. E., Sellers, T. A., Virtamo, J., Willett, W. C., and Smith-Warner, S. A. Intakes of vitamins A, C and E and folate and multivitamins and lung cancer: a pooled analysis of 8 prospective studies. 2018;18:e1389-e1400. 1972;13:75-78. Nutr Res 2001;21:797-809. Ruiz, B., Garay, J., Correa, P., Fontham, E. T., Bravo, J. C., Bravo, L. E., Realpe, J. L., and Mera, R. Morphometric evaluation of gastric antral atrophy: improvement after cure of Helicobacter pylori infection. Bonifant, C. M., Shevill, E., and Chang, A. Cook, N. R., Albert, C. M., Gaziano, J. M., Zaharris, E., MacFadyen, J., Danielson, E., Buring, J. E., and Manson, J. E. A randomized factorial trial of vitamins C and E and beta carotene in the secondary prevention of cardiovascular events in women: results from the Women's Antioxidant Cardiovascular Study. Proc Nutr Soc 2005;64:543-553. Jeon, Y. J., Myung, S. K., Lee, E. H., Kim, Y., Chang, Y. J., Ju, W., Cho, H. J., Seo, H. G., and Huh, B. Y. Age related macular degeneration--should your patients be taking additional supplements? No author. Gey KF, Stahelin HB, Eichholzer M. Poor plasma status of carotene and vitamin C is associated with higher mortality from ischemic heart disease and stroke: Basel Prospective Study. Minder, E. I., Schneider-Yin, X., Steurer, J., and Bachmann, L. M. A systematic review of treatment options for dermal photosensitivity in erythropoietic protoporphyria. Lin, J., Cook, N. R., Albert, C., Zaharris, E., Gaziano, J. M., Van, Denburgh M., Buring, J. E., and Manson, J. E. Vitamins C and E and beta carotene supplementation and cancer risk: a randomized controlled trial. 2010;64:1072-1079. Acta Ophthalmol Scand 1998;76:224-9. Barth, J., Fickweiler, E., Harnack, K., Herrmann, K., Hubner, U., Schaarschmidt, H., and Schiller, F. [Beta-carotene treatment of protoporphyrias and polymorphic light dermatoses]. Retinol, carotenoids, and tocopherol and risk of prostate cancer. Chemoprevention of gastric dysplasia: randomized trial of antioxidant supplements and anti-Helicobacter pylori therapy. Am.J.Gastroenterol. Cancer Causes Control 2009;20:699-711. Watters, J. M., Vallerand, A., Kirkpatrick, S. M., Abbott, H. E., Norris, S., Wells, G., and Barber, G. G. Limited effects of micronutrient supplementation on strength and physical function after abdominal aortic aneurysmectomy. Tomarte tu tiempo te ayudar a tragar menos aire. Evans, J. R. and Henshaw, K. Antioxidant vitamin and mineral supplements for preventing age-related macular degeneration. Am J Clin Nutr 2001;73:1045-51. Kockar, C., Ozturk, M., and Bavbek, N. Helicobacter pylori eradication with beta carotene, ascorbic acid and allicin. Werneke, U. Una vez consumidos, los carotenoides se convierten poco a poco en vitamina A en el organismo. Beta-carotene and other carotenoids as antioxidants. Gastrointestinal effects of long-term colchicine therapy in patients with recurrent polyserositis (Familial Mediterranean Fever). Carotenoids and carotenoids plus vitamin E protect against ultraviolet light-induced erythema in humans. Cortes-Jofre, M., Rueda, J. R., Corsini-Munoz, G., Fonseca-Cortes, C., Caraballoso, M., and Bonfill, Cosp, X. 1-7-2009;101:14-23. Klipstein-Grobusch K, Geleijnse JM, den Breeijen JH, et al. Lack of effect of long-term supplementation with beta-carotene on the incidence of malignant neoplasms and cardiovascular disease. Beta carotene: from biochemistry to clinical trials. Med Toxicol 1987;2:10-32. Becker GL. Christian P, Khatry SK, Yamini S, et al. 2008;:CD007176. El betacaroteno se encuentra en muchas frutas y verduras. 2019;11. pii: E1101. No controlamos ni tenemos ninguna responsabilidad por el contenido de ningn sitio de terceros. 2002;56:615-621. N Engl J Med 1994;331:141-7. 2010;:CD008666. Li K, Zhang B. Tambin es bajo en caloras, por lo que es una verdura muy saludable Reversibility]. Cochrane.Database.Syst.Rev. Los betacarotenos tienen Oral Oncol. Cochrane.Database.Syst.Rev. Cochrane.Database.Syst.Rev. WebLa hipersalivacin puede ser el resultado de: produccin excesiva de saliva. Perry, J. R., Ferrucci, L., Bandinelli, S., Guralnik, J., Semba, R. D., Rice, N., Melzer, D., Saxena, R., Scott, L. J., McCarthy, M. I., Hattersley, A. T., Zeggini, E., Weedon, M. N., and Frayling, T. M. Circulating beta-carotene levels and type 2 diabetes-cause or effect? Radhika MS, Bhaskaram P, Balakrishna N, Ramalakshmi BA. Int J Environ Res Public Health. Antioxidant vitamins and coronary heart disease risk: a pooled analysis of 9 cohorts. Br.J.Nutr. Multivitamin use and risk of prostate cancer in the National Institutes of Health-AARP Diet and Health Study. Ye, Z. and Song, H. Antioxidant vitamins intake and the risk of coronary heart disease: meta-analysis of cohort studies. 2-1-2007;165:246-255. PLoS.One. Teikari JM, Laatikainen L, Virtamo J, et al. UV light, beta-carotene and human skin--beneficial and potentially harmful effects. Lodi, G., Sardella, A., Bez, C., Demarosi, F., and Carrassi, A. Acta Paediatr. Lancet 11-7-1992;340:1124-1127. El consumo de cantidades excesivamente grandes de vitamina A de una sola vez causa somnolencia, irritabilidad, dolor de cabeza, nuseas y vmitos en cuestin de horas, seguidos en ocasiones de descamacin de la piel. Cancer Causes Control 2002;13:573-582. La oxalosis ocurre si tienes hiperoxaluria primaria y los riones fallan. Koonsvitsky BP, Berry DA, et al. Digestion 1998;59:148-156. de Klerk, N. H., Musk, A. W., Ambrosini, G. L., Eccles, J. L., Hansen, J., Olsen, N., Watts, V. L., Lund, H. G., Pang, S. C., Beilby, J., and Hobbs, M. S. Vitamin A and cancer prevention II: comparison of the effects of retinol and beta-carotene. WebBrcoli. JAMA 1961;175:187-90. Norrish AE, Jackson RT, Sharpe SJ, Skeaff CM. Tomar dosis muy altas de vitamina A o de isotretinona (un frmaco derivado de la vitamina A empleado para el tratamiento del acn grave) durante el embarazo puede producir defectos congnitos. Como el organismo no puede eliminar el exceso de oxalato, este se empieza a acumular, primero en la sangre, luego en los ojos, los huesos, la piel, los msculos, los vasos sanguneos, el corazn y otros rganos. La presin endocraneal aumenta, sobre todo en los nios, y se producen vmitos. Nutritional intervention trials in Linxian, China: supplementation with specific vitamin/mineral combinations, cancer incidence, and disease-specific mortality in the general population. WebRemolacha. Muchas autoridades sanitarias mundiales recomiendan obtener betacaroteno y otros antioxidantes de los alimentos en lugar de suplementos. 2008;:CD006751. Serum beta-carotene, retinol, and alpha-tocopherol levels during mineral oil therapy for constipation. Wenzel, G., Kuklinski, B., Ruhlmann, C., and Ehrhardt, D. [Alcohol-induced toxic hepatitis--a "free radical" associated disease. Lahner, E., Persechino, S., and Annibale, B. Micronutrients (Other than iron) and Helicobacter pylori infection: a systematic review. 2012;6:CD004567. Hemil H. The effect of -carotene on the mortality of male smokers is modified by smoking and by vitamins C and E: evidence against a uniform effect of nutrient. Mente, A., de, Koning L., Shannon, H. S., and Anand, S. S. A systematic review of the evidence supporting a causal link between dietary factors and coronary heart disease. J Nutr 1998;128:1458-63. Cook NR, Stampfer MJ, Ma J, et al. La absorcin es mejor si las verduras se han cocinado u homogeneizado y se sirven junto con un poco de grasa o aceite. Tira de la cinta mtrica hasta que encaje cmodamente a tu alrededor, pero no la empujes dentro de tu piel. Girodon F, Galan P, Monget AL, et al. 2007;137:2098-2105. Hininger, I. 1997;33:231-236. Chest 2007;132(3 Suppl):56S-68S. Pabalan, N., Jarjanazi, H., Sung, L., Li, H., and Ozcelik, H. Menopausal status modifies breast cancer risk associated with the myeloperoxidase (MPO) G463A polymorphism in Caucasian women: a meta-analysis. Bjelakovic, G., Nikolova, D., Simonetti, R. G., and Gluud, C. Systematic review: primary and secondary prevention of gastrointestinal cancers with antioxidant supplements. Knekt P, Ritz J, Pereira MA, et al. A., Littman, A., Slatore, C. G., Galanko, J. El betacaroteno se puede adquirir tambin a partir de suplementos, con dosis usuales de 2 a 15 mg diarios, tomados en forma de cpsulas o tabletas. Tambin a travs de suplementos de polen de abeja. B. Reexamination of a meta-analysis of the effect of antioxidant supplementation on mortality and health in randomized trials. 2020;9:e11. El betacaroteno es una forma de vitamina A, importante para tener unos huesos sanos, para el crecimiento celular y para mantener un sistema inmunitario fuerte, J Natl Cancer Inst 1999;91:547-56. WebEl procesamiento y la homogeneizacin hacen que el caroteno est ms disponible para la absorcin. Es rico en fibra y magnesio. Alpha-tocopherol and beta-carotene supplements and lung cancer incidence in the alpha-tocopherol, beta-carotene cancer prevention study: effects of baseline characteristics and study compliance. Ehrenfeld M, Levy M, Sharon P, et al. Diabetologia 2009;52:97-105. Los medicamentos que contienen vitamina A (retinoides) se utilizan para tratar el acn grave y la psoriasis. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E and beta carotene for age-related cataract and vision loss: AREDS report no. Am J Med Sci 1970;259:32-41. Arch Dis Child 1996;74:157-60. Betacarotenos: qu aportan a tu salud las frutas y verduras naranjas. Takeda A, Nyssen OP, Syed A, et al. Escrito por el personal de Mayo Clinic Aunque los eructos o los gases (flatulencia) sean naturales y comunes, una cantidad excesiva de ellos, acompaada por Cancer Epidemiol.Biomarkers Prev. Zhang S, Hunter DJ, Forman MR, et al. 2004;11:401-412. El enlace que ha seleccionado lo llevar a un sitio web de terceros. Cho S, Lee DH, Won CH, Kim SM, Lee S, Lee MJ, Chung JH. Rodrigues, M. J., Bouyon, A., and Alexandre, J. A randomized controlled trial to assess sunscreen application and beta carotene supplementation in the prevention of solar keratoses. Satia, J. Intake of carotenoids and retinol in relation to risk of prostate cancer. Mod.Probl.Paediatr. Von Low, E. C., Perabo, F. G., Siener, R., and Muller, S. C. Review. Prakash P, Russell RM, Krinsky NI. J Alzheimers Dis. Cochrane.Database.Syst.Rev. Irlam, J. H., Visser, M. E., Rollins, N., and Siegfried, N. Micronutrient supplementation in children and adults with HIV infection. Med.Sci.Sports Exerc. 2009;101:1113-1131. Dietary carotenoids, vitamins A, C, and E, and advanced age-related macular degeneration. Shamseer, L., Adams, D., Brown, N., Johnson, J. Double-blind cluster, randomised trial of low dose supplementation with vitamin A or beta carotene on mortality related to pregnancy in Nepal. The apparent inverse association between dietary carotene intake and risk of cardiovascular mortality disappeared after adjustment for other cardioprotective dietary intakes: The Japan collaborative cohort study. Gann PH, Ma J, Giovannucci E, et al. 2013;73:236-45. Circulation 1999;99:591-5. Bjelakovic, G., Nikolova, D., Gluud, L. L., Simonetti, R. G., and Gluud, C. Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. J.Health Popul.Nutr. J.Natl.Cancer Inst. Nutrition intervention trials in Linxian, China: multiple vitamin/mineral supplementation, cancer incidence, and disease-specific mortality among adults with esophageal dysplasia. N Engl J Med 2001;345:1583-93. BMJ 10-13-2007;335:755. Incidence of cataract operations in Finnish male smokers unaffected by alpha tocopherol or beta carotene supplements. Circ Res. He J, Gu Y, Zhang S. Vitamin A and Breast Cancer Survival: A Systematic Review and Meta-analysis. Para confirmar el diagnstico, se pueden realizar anlisis de sangre que determinan la concentracin de vitamina A. El tratamiento de toxicidad por vitamina A implica suspender los complementos de vitamina A. A randomized controlled trial to assess sunscreen application and beta carotene supplementation in the prevention of solar keratoses. Alberg AJ, Chen JC, Zhao H, et al. Circulation 2004;110:637-41. Zhu S, Mason J Shi Y et al. Worthington, H. V., Clarkson, J. E., and Eden, O. 1996;67:30-49. von Laar, J., Stahl, W., Bolsen, K., Goerz, G., and Sies, H. Beta-carotene serum levels in patients with erythropoietic protoporphyria on treatment with the synthetic all-trans isomer or a natural isomeric mixture of beta-carotene. Higo. Dietary carotenoids and certain cancers, heart disease, and age-related macular degeneration: a review of recent research. J Natl Cancer Inst 2006;98:974-83. van Leeuwen R, Boekhoorn S, Vingerling JR, et al. 9-20-1990;323:789-795. Aliment.Pharmacol Ther 7-15-2006;24:281-291. Seddon JM, Ajani UA, Sperduto R, et al. 2004;80:1299-1307. Algunos de los alimentos que constituyen una buena fuente de carotenoides son las verduras y hortalizas de color verde oscuro, amarillo y naranja y las frutas de color amarillo y naranja. Use for phrases Se advierte a los consumidores y profesionales mdicos que consulten esta monografa que cualquier decisin mdica o relacionada con el producto es responsabilidad exclusiva del consumidor y / o del profesional de la salud. Mathews-Roth, M. M., Pathak, M. A., Fitzpatrick, T. B., Harber, L. H., and Kass, E. H. Beta carotene therapy for erythropoietic protoporphyria and other photosensitivity diseases. Int.J.Dermatol. J Affect Disord 2021;287:96-100. Arch Ophthalmol 2001;119:1417-36. Fortschr.Med. Arch Neurol 2003;60:203-8.. Klipstein-Grobusch K, den Breeijen JH, Grobbee DE, et al. Ann.Intern.Med. Effects of supplemental beta-carotene, cigarette smoking, and alcohol consumption on serum carotenoids in the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study. 2001;10:257-263. McArdle, F., Rhodes, L. E., Parslew, R. A., Close, G. L., Jack, C. I., Friedmann, P. S., and Jackson, M. J. Natural Medicines Comprehensive Database (La Base Exhaustiva de Datos de Medicamentos Naturales) clasifica la eficacia, basada en evidencia cientfica, de acuerdo a la siguiente escala: Eficaz, Probablemente Eficaz, Posiblemente Eficaz, Posiblemente Ineficaz, Probablemente Ineficaz, Ineficaz, e Insuficiente Evidencia para Hacer una Determinacin.La clasificacin de la eficacia para este producto es la siguiente: Para saber ms sobre cmo este artculo fue escrito, refirase a la metodologa de la Base exhaustiva de datos de medicamentos naturales. WebAnlisis de sangre. J Am Coll Nutr 2001;20:232-238. JAMA 2007;297:842-57. Talaei M, Hughes DA, Mahmoud O, et al. Como ya sabes, los betacarotenos suministran vitamina A al cuerpo, y este lo procesa solo cuando lo necesita. Tardif JC. Chan, J. M., Pietinen, P., Virtanen, M., Malila, N., Tangrea, J., Albanes, D., and Virtamo, J. NIH Consens.State Sci.Statements. Wright, M. E., Virtamo, J., Hartman, A. M., Pietinen, P., Edwards, B. K., Taylor, P. R., Huttunen, J. K., and Albanes, D. Effects of alpha-tocopherol and beta-carotene supplementation on upper aerodigestive tract cancers in a large, randomized controlled trial. The Skin Cancer Prevention Study Group.
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