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  1. www.mayoclinic.org › drugs-supplements-vitamin-c › art-20363932Vitamin C - Mayo Clinic

    2023年8月10日 · Vitamin C (ascorbic acid) is a nutrient your body needs to form blood vessels, cartilage, muscle and collagen in bones. Vitamin C is also vital to your body's healing process. Vitamin C is an antioxidant that helps protect your cells against the effects of free radicals — molecules produced when your body breaks down food or is exposed to ...

  2. 2022年4月28日 · The recommended daily amount for vitamin C is 75 milligrams (mg) a day for women and 90 mg a day for men. During pregnancy, 120 mg a day are recommended. The upper limit for all adults is 2,000 mg a day. Although too much dietary vitamin C is unlikely to be harmful, large doses of vitamin C supplements might cause: Diarrhea.

  3. 2024年7月12日 · The following might help you feel better: Drink plenty of fluids. Water, juice, clear broth or warm lemon water with honey helps loosen stuffiness, called congestion. These also help prevent losing too much fluid, called dehydration. Don't drink alcohol, coffee and sodas with caffeine. They can make dehydration worse. Rest.

  4. www.mayoclinic.org › es › drugs-supplements-vitamin-cVitamina C - Mayo Clinic

    2023年8月10日 · Descripción general. La vitamina C (ácido ascórbico) es un nutriente que el cuerpo necesita para formar vasos sanguíneos, cartílagos, músculos y colágeno en los huesos. La vitamina C también es vital para el proceso de curación del cuerpo. La vitamina C es un antioxidante que protege las células contra los efectos de los radicales ...

  5. 2022年12月15日 · 所有成人每天最多摄入 2000 毫克(mg)。. 尽管过多的膳食维生素 C 不太可能有害,但大剂量的维生素 C 补充剂可能导致:. 腹泻. 恶心. 呕吐. 胃灼热. 胃(腹部)痛性痉挛. 头痛. 请注意,对于大多数人来说,健康的饮食即可提供足量维生素 C。.

  6. 2023年12月15日 · Interest in using very high doses of vitamin C as a cancer treatment began as long ago as the 1970s when it was discovered that some properties of the vitamin may make it toxic to cancer cells. Initial studies in humans had promising results, but these studies were later found to be flawed. Subsequent well-designed, randomized, controlled ...

  7. www.mayoclinic.org › drugs-supplements-vitamin-b12 › art-20363663Vitamin B-12 - Mayo Clinic

    2024年6月28日 · The recommended daily amount of vitamin B-12 for adults is 2.4 micrograms (mcg). Most people can get enough vitamin B-12 in the foods they eat. But people who follow a vegetarian or vegan diet should eat nutritional yeast and other foods fortified with vitamin B-12. Or they can take a low-dose multivitamin that includes 2.4 mcg of vitamin B-12.

  8. www.mayoclinic.org › drugs-supplements-vitamin-d › art-20363792Vitamin D - Mayo Clinic

    2023年8月10日 · Vitamin D is a nutrient your body needs for building and maintaining healthy bones. That's because your body can only absorb calcium, the primary component of bone, when vitamin D is present. Vitamin D also regulates many other cellular functions in your body. Its anti-inflammatory, antioxidant and neuroprotective properties support immune ...

  9. فيتامين C أحد مضادات الأكسدة التي تحمي خلايا جسمك من آثار الجذور الحرة؛ وهي جزيئات تنشأ أثناء هضم وتفتيت جسمك للطعام أو عند تعرض الجسم لدخان التبغ وأشعة الشمس أو الأشعة السينية أو مصادر أخرى ...

  10. 2023年8月10日 · 维生素 C 是一种抗氧化剂,可帮助保护细胞免受自由基的影响,其中自由基是当机体分解食物或接触烟草烟雾和来自太阳、X 线或其他来源的射线时产生的分子。. 自由基可能会在预防心脏病、癌症及其他疾病方面发挥作用。. 维生素 C 还可以帮助身体吸收和存储 ...

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