Error Email field is required. Error Include a valid email address. To provide you with the most relevant and helpful information and to understand which information is beneficial, we may combine your e-mail and website usage information with other information we have about you.
If we combine this information with your PHI, we will treat all of that information as PHI, and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of e-mail communications at any time by clicking on the Unsubscribe link in the e-mail. Our Housecall e-newsletter will keep you up-to-date on the latest health information. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. Mayo Clinic is a nonprofit organization and proceeds from Web advertising help support our mission. Mayo Clinic does not endorse any of the third party products and services advertised. A single copy of these materials may be reprinted for noncommercial personal use only. This content does not have an English version. This content does not have an Arabic version.
See more conditions. Vitamin C. Products and services. Thank you for Subscribing Our Housecall e-newsletter will keep you up-to-date on the latest health information.
Please try again. Something went wrong on our side, please try again. Show references Vitamin C — Fact sheet for health professionals. The daily upper limits for vitamin C include intakes from all sources—food, beverages, and supplements—and are listed below:. Vitamin C dietary supplements can interact or interfere with medicines that you take. Here are several examples:. Tell your doctor, pharmacist, and other healthcare providers about any dietary supplements and medicines you take.
They can tell you if those dietary supplements might interact or interfere with your prescription or over-the-counter medicines or if the medicines might interfere with how your body absorbs, uses, or breaks down nutrients. Foods contain vitamins, minerals, dietary fiber and other components that benefit health.
In some cases, fortified foods and dietary supplements are useful when it is not possible to meet needs for one or more nutrients e. For more information about building a healthy dietary pattern, see the Dietary Guidelines for Americans and the U. This fact sheet by the Office of Dietary Supplements ODS provides information that should not take the place of medical advice.
We encourage you to talk to your healthcare providers doctor, registered dietitian, pharmacist, etc. Any mention in this publication of a specific product or service, or recommendation from an organization or professional society, does not represent an endorsement by ODS of that product, service, or expert advice. Updated: March 22, History of changes to this fact sheet. Find ODS on:. Strengthening Knowledge and Understanding of Dietary Supplements.
Health Information Health Information. Vitamin C Fact Sheet for Consumers. Table of Contents What is vitamin C and what does it do? How much vitamin C do I need? What foods provide vitamin C? What kinds of vitamin C dietary supplements are available? Am I getting enough vitamin C? What happens if I don't get enough vitamin C? What are some effects of vitamin C on health? Can vitamin C be harmful? Does vitamin C interact with medications or other dietary supplements?
Vitamin C and healthful eating Where can I find out more about vitamin C? Disclaimer This fact sheet by the Office of Dietary Supplements ODS provides information that should not take the place of medical advice. Health Information. About ODS. Another analysis of 13 studies looked at the effects of taking at least mg of vitamin C daily on risk factors for heart disease, such as blood cholesterol and triglyceride levels.
The analysis found that taking a vitamin C supplement significantly reduced LDL bad cholesterol by approximately 7. In short, it seems that taking or consuming at least mg of vitamin C daily may reduce the risk of heart disease. However, if you already consume a vitamin-C-rich diet, then supplements may not provide additional heart health benefits. Vitamin C supplements have been linked to a reduced risk of heart disease. These supplements may lower heart disease risk factors, including high blood levels of LDL bad cholesterol and triglycerides.
People with gout experience swelling and sudden, severe attacks of pain Gout symptoms appear when there is too much uric acid in the blood. Uric acid is a waste product produced by the body. At high levels, it may crystallize and deposit in the joints.
Interestingly, several studies have shown that vitamin C may help reduce uric acid in the blood and, as a result, protect against gout attacks.
For example, a study including 1, men found that those who consumed the most vitamin C had significantly lower blood levels of uric acid than those who consumed the least Another study followed 46, healthy men over 20 years to determine whether vitamin C intake was linked to developing gout.
Additionally, an analysis of 13 studies found that taking a vitamin C supplement over 30 days significantly reduced blood uric acid, compared with a placebo While there appears to be a strong link between vitamin C intake and uric acid levels, more studies on the effects of vitamin C on gout are needed. Vitamin-C-rich foods and supplements have been linked to reduced blood uric acid levels and lower risk of gout. Iron is an important nutrient that has a variety of functions in the body.
Vitamin C supplements can help improve the absorption of iron from the diet. Vitamin C assists in converting iron that is poorly absorbed, such as plant-based sources of iron, into a form that is easier to absorb In one study, 65 children with mild iron deficiency anemia were given a vitamin C supplement.
Researchers found that the supplement alone helped control their anemia If you have low iron levels, consuming more vitamin-C-rich foods or taking a vitamin C supplement may help improve your blood iron levels. Vitamin C can improve the absorption of iron that is poorly absorbed, such as iron from meat-free sources. It may also reduce the risk of iron deficiency.
One of the main reasons people take vitamin C supplements is to boost their immunity , as vitamin C is involved in many parts of the immune system. First, vitamin C helps encourage the production of white blood cells known as lymphocytes and phagocytes, which help protect the body against infection Second, vitamin C helps these white blood cells function more effectively while protecting them from damage by potentially harmful molecules, such as free radicals.
Studies have also shown that taking vitamin C may shorten wound healing time 23 , For example, people who have pneumonia tend to have lower vitamin C levels, and vitamin C supplements have been shown to shorten the recovery time 25 , Dementia is a broad term used to describe symptoms of poor thinking and memory.
It affects over 35 million people worldwide and typically occurs among older adults Studies suggest that oxidative stress and inflammation near the brain, spine, and nerves altogether known as the central nervous system can increase the risk of dementia
0コメント