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13 pages for "Beta-carotene"
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Vitamins & SupplementsBeta-Carotene Supplements, Smokers and the ATBC and CARET Trials
The ATBC and CARET trials found beta-carotene pills raised lung cancer risk in smokers and asbestos-exposed workers. What the trials, follow-ups and reviews found, and who should ask a clinician.
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Vitamins & SupplementsCarotenoids: Beta-Carotene, Lutein, Zeaxanthin and Lycopene
Beta-carotene, lutein, zeaxanthin and lycopene in plain language: what trials found for eyes and skin, why high-dose beta-carotene is a risk for smokers, and what AREDS2 is.
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Vitamins & SupplementsVitamin A: Retinol, Beta-Carotene, Food Sources, Deficiency and Safety
Vitamin A explained: retinol versus beta-carotene, food sources, deficiency, official intake levels and upper limits from the US, UK and EU, pregnancy and smoking cautions.
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Vitamins & SupplementsVitamins and Cancer Prevention: Beta-Carotene, E, D, B and Antioxidant Trials
What randomized trials and the US Preventive Services Task Force found about beta-carotene, vitamins E, C, D, B and multivitamins for cancer prevention, including trials that found harm.
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Vitamins & SupplementsPreformed Vitamin A (Retinol) vs Beta-Carotene: Differences in Conversion and Safety
Preformed vitamin A (retinol and retinyl esters) compared with beta-carotene and other provitamin A carotenoids: conversion, intake levels, the smoker warning and pregnancy cautions.
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Vitamins & SupplementsAntioxidants and Cancer: Prevention Trial Results and Treatment Cautions
What randomized trials found when antioxidant supplements were tested to prevent cancer, why beta-carotene harmed smokers, and why people in cancer treatment should tell their oncology team first.
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Vitamins & SupplementsAntioxidants, Cognition and Dementia Risk: What Trials Found
What randomized trials and Cochrane reviews found for vitamin E, vitamin C, beta-carotene and selenium on memory, cognitive decline and dementia, and what stays uncertain.
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Vitamins & SupplementsAntioxidants, Smoking, Alcohol and Higher-Risk Groups
What the ATBC, CARET and AREDS2 trials found about beta-carotene in smokers, former smokers, asbestos-exposed workers and heavier drinkers, and who else should ask a clinician first.
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Seaweed & AlgaeDunaliella: Nutrients, What Research Shows and Safety
Dunaliella, a microalga rich in natural beta-carotene: the smokers and lung cancer warning, what small trials found, and how regulators treat it as a color and supplement.
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Vitamins & SupplementsHigh-Potency and "Megadose" Multivitamins: What Label Amounts Mean
What "high potency" and "megadose" multivitamin amounts mean, compared with official upper levels from EFSA and the NHS, and what trials found for high-amount beta-carotene and vitamin A.
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VegetablesPumpkin: Nutrients, What Research Shows and Safety
What pumpkin (Cucurbita pepo, C. maxima) offers, beta-carotene and vitamin A, canned pumpkin versus pie filling, fiber and potassium, and the safety facts that matter.
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Functional FoodsSweet Potatoes, Carrots and Orange Vegetables
What sources say about sweet potatoes, carrots and other orange vegetables, beta-carotene in food versus supplements, and why the two should not be confused, especially for smokers.
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Vitamins & SupplementsVitamin A Excess: Toxicity, Pregnancy, Birth Defect Risk and Retinoid Medicines
Too much preformed vitamin A can harm the liver, bones and an unborn baby; official upper levels, pregnancy findings, retinoid medicines and how beta-carotene differs.
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