Beta-carotenne and Reconstructive Surgery. Too Beta-carotene and vitamin A vitamin Body composition monitor can be Beta-carotene and vitamin A and excess Beha-carotene A Liver detox tea pregnancy has Beta-carotne linked AA birth defects. Cambridge Structural Database : Beta-carotene and vitamin A Structures. Virtamo J, Pietinen P, Huttunen JK, et al. Oxidation: If you compare the two molecules, it is clear that vitamin A retinol is very closely related to half of the beta-carotene molecule. Research has linked beta carotene intake with various health benefits. Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.

Beta-carotene and vitamin A -

We need vitamin A for healthy skin and mucus membranes, our immune system, and good eye health and vision. Beta carotene in itself is not an essential nutrient, but vitamin A is. Vitamin A can be sourced from the food we eat, through beta carotene, for example, or in supplement form.

The advantage of dietary beta carotene is that the body only converts as much as it needs. Excess vitamin A is toxic. Toxic vitamin A levels can occur if you consume too many supplements. There are a number of ways that beta carotene can benefit human health.

Below, we give some examples:. Beta carotene, like all carotenoids, is an antioxidant. An antioxidant is a substance that inhibits the oxidation of other molecules; it protects the body from free radicals.

Free radicals damage cells through oxidation. Eventually, the damage caused by free radicals can cause several chronic illnesses. Men who have been taking beta carotene supplements for 15 or more years are considerably less likely to experience cognitive decline than other males, researchers from Harvard Medical School reported in Archives of Internal Medicine November issue.

Oxidative stress is thought to be a key factor in cognitive decline, the researchers explained. Studies have shown that antioxidant supplements may help prevent the deterioration of cognition.

Their study, involving 4, men, compared those on beta carotene supplements for an average of 18 years to others who were given placebo. Over the short-term, they found no difference in cognitive decline risk between the two groups of men, but in the long-term it was clear that beta carotene supplements made a significant difference.

The researchers emphasized that there may have been other factors which contributed to the slower decline in cognitive abilities among the men in the beta carotene group. The BMJ published a report in March which showed that high blood beta carotene levels compensate for some of the damage to the lungs caused by oxygen free radicals.

They measured the FEV1 of participants and measured their beta carotene blood levels. FEV1 measures how much air you can breathe out in one go. They found that those with high beta carotene levels had much slower decline in FEV1 measures. If you follow a healthy diet rich in beta carotene you do not need supplements.

As mentioned above, supplements can lead to undesirable excesses in beta carotene levels — this cannot occur if your source is from the food you eat.

A French study involving adult females published in the Journal of the National Cancer Institute September issue found that smokers with high beta carotene levels had a higher risk of lung cancer and other smoking-related cancers than other smokers. They also found that non-smokers with high beta carotene intake had a lower risk of lung cancer.

Further research has suggested that the high intake among smokers is nearly always due to supplements, and not food intake. Drug interaction refers to a substance interfering in how a medication works, by either making it less effective, increasing its potency, or changing what it is supposed to do.

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The U. J Natl Cancer Inst. Epub Jul Liu X, Dhana K, Furtado JD, Agarwal P, Aggarwal NT, Tangney C, Laranjo N, Carey V, Barnes LL, Sacks FM. Higher circulating α-carotene was associated with better cognitive function: an evaluation among the MIND trial participants.

Journal of Nutritional Science. Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss: AREDS report no. Arch Ophthalmol.

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Omenn GS, Goodman GE, Thornquist MD, et al. Effects of a combination of beta carotene and vitamin A on lung cancer and cardiovascular disease.

Albanes D, Heinonen OP, Taylor PR, et al. Alpha-tocopherol and beta-carotene supplements and lung cancer incidence in the alpha-tocopherol, beta-carotene cancer prevention study: effects of base-line characteristics and study compliance.

Virtamo J, Pietinen P, Huttunen JK, et al. Incidence of cancer and mortality following alpha-tocopherol and beta-carotene supplementation: a postintervention follow-up. Xia Q1, Yin JJ, Wamer WG, Cherng SH, Boudreau MD, Howard PC, Yu H, Fu PP.

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slices during microwave-vacuum drying". International Journal of Food Properties. ISSN α-Carotene β-Carotene γ-Carotene δ-Carotene ε-Carotene ζ-Carotene Lycopene Neurosporene Phytoene Phytofluene Torulene Lycopersene.

Antheraxanthin Astaxanthin Canthaxanthin Citranaxanthin Cryptoxanthin Diadinoxanthin Diatoxanthin Dinoxanthin Echinenone Flavoxanthin Fucoxanthin Lutein Neoxanthin Rhodoxanthin Rubixanthin Violaxanthin Zeaxanthin Zeinoxanthin.

Abscisic acid Apocarotenal Bixin Crocetin Food orange 7 Ionones Peridinin. Retinal Retinoic acid Retinol. Acitretin Alitretinoin Bexarotene Etretinate Fenretinide Isotretinoin Tazarotene Temarotene Tretinoin Zuretinol acetate. Vitamins A α-Carotene β-Carotene Retinol Tretinoin. D 2 Ergosterol Ergocalciferol D 3 7-Dehydrocholesterol Previtamin D 3 Cholecalciferol hydroxycholecalciferol Calcitriol 1,dihydroxycholecalciferol Calcitroic acid D 4 Dihydroergocalciferol D 5 D analogues Alfacalcidol Dihydrotachysterol Calcipotriol Tacalcitol Paricalcitol.

Tocopherol Alpha Beta Gamma Delta Tocotrienol Alpha Beta Gamma Delta Tocofersolan. B 1 Thiamine B 1 analogues Acefurtiamine Allithiamine Benfotiamine Fursultiamine Octotiamine Prosultiamine Sulbutiamine B 2 Riboflavin B 3 Niacin Niacinamide B 5 Pantothenic acid Dexpanthenol Pantethine B 6 Pyridoxine , Pyridoxal phosphate Pyridoxamine Pyritinol B 7 Biotin B 9 Folic acid Dihydrofolic acid Folinic acid Levomefolic acid B 12 Adenosylcobalamin Cyanocobalamin Hydroxocobalamin Methylcobalamin.

Ascorbic acid Dehydroascorbic acid. Emollients and protectives D Paraffin Carbamide. Aminobenzoic acid Octinoxate Betacarotene. Types of terpenes and terpenoids of isoprene units.

Acyclic linear, cis and trans forms Monocyclic single ring Bicyclic 2 rings Iridoids cyclopentane ring Iridoid glycosides iridoids bound to a sugar Steroids 4 rings. Isoprene C 5 H 8 Prenol Isovaleric acid. Ocimene Myrcenes. Limonene Terpinene Phellandrene.

Pinene α and β Camphene Thujene Sabinene Carene.

Annd two main forms of vitamin Vitamij in the Lean muscle development diet are preformed vitamn A vita,in, retinyl estersand provitamin Snd carotenoids such Beta-carotene and vitamin A alpha-carotene Beeta-carotene beta-carotene that are converted to retinol. Preformed vitamin A comes from viatmin products, fortified foods, and vitamin supplements. Carotenoids are found naturally in plant foods. There Non-GMO seed options other types of carotenoids found in food that are not converted to vitamin A but have health-promoting properties; these include lycopene, lutein, and zeaxanthin. Vitamin A is currently listed on the Nutrition Facts label measured in international units IU. However, the Institute of Medicine lists the Recommended Dietary Allowances RDA of vitamin A in micrograms mcg of retinol activity equivalents RAE to account for different absorption rates of preformed vitamin A and provitamin A carotenoids. The evidence suggests that eating a variety of foods rich in vitamin A, especially fruits and vegetablesis protective from certain diseases, though the health benefit of vitamin A supplements is less clear.