write function of vitamin c suggest two sources of its
Answers
Vitamin c helps in fighting with diseases and keeps us healthy and it also helps in growth,repair and development of the body.
Its sources are:
Lemon
And all citrus fruits like Orange .
Vitamin C, also called ascorbic acid, is important to many functions in the body. For example, it is needed to grow and repair tissues throughout the body. Vitamin C is a popular remedy for the common cold, but research is mixed on whether it helps or prevents the sniffles.
Sources of vitamin C
Dietary sources of vitamin C include many fruits and vegetables. Sources with the most vitamin C are fresh, raw cantaloupes, citrus fruits, kiwis, mangos, papayas, pineapples, strawberries, raspberries, blueberries, watermelon and cranberries, according to National Institutes of Health (NIH). Red and green peppers, spinach, cabbage, cauliflower, turnip greens and other leafy greens, tomatoes, potatoes, broccoli, winter squash and Brussels sprouts are other good sources of vitamin C.
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Benefits
The body uses vitamin C in many different ways. Vitamin C is needed by the body to form collagen. According to the NIH, the body also uses vitamin C to make skin, tendons, ligaments and blood vessels. It also uses this vitamin to repair and maintain cartilage, bones and teeth, to heal wounds and to form scar tissue.
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Vitamin C may also prevent cancer by blocking the damage made by free radicals. “Vitamin C is a vital antioxidant that helps protect cells from damage caused by free radicals that we are exposed to in the environment such as air pollution, cigarette smoke and ultraviolet light from the sun,” said Dr. Sherry Ross, OB/GYN and Women’s Health Expert at Providence Saint John’s Health Center in Santa Monica, California.
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Many people tout vitamin C as a cure-all for a wide range of diseases. Many of these have not been proven. “Health benefits of vitamin C that have been proposed but not scientifically proven include a lower risk of certain cancers, cardiovascular disease, diabetes, age-related macular degeneration and cataracts,” said Ross.
A study by the National Eye Institute, however, did find that an intake of 500 mg per day of vitamin C, along with beta-carotene, vitamin E and zinc supplements, slowed the progression of advanced age-related macular degeneration by about 25 percent. It also helped slow visual acuity loss by 19 percent for those who are already at high risk of developing the disease. The vitamins did not have significant effect on the development or progression of cataracts, though.
The medical community is split over the benefits of vitamin C on the heart. Some studies suggest that vitamin C may prevent heart attacks by slowing down hardening of the arteries by preventing LDL ("bad") cholesterol. Other studies show that vitamin C does not prevent heart attacks. A study by Johns Hopkins found that vitamin C has a “modest” effect on lowering high blood pressure and does not currently suggest supplements as a treatment option.
Vitamin C is often taken to prevent or cure the common cold. Research shows that most people taking high doses of Vitamin C still get the common cold just as often as those who don’t take high doses. It may shorten the amount of time a person is sick, though, and may also lessen the symptoms.
Deficiency and Dosage
Vitamin C deficiency is fairly common. Smoking cigarettes can lower the amount of vitamin C in the body, so smokers are more prone to a deficiency, according to the University of Maryland Medical Center. Often, doctors will suggest a vitamin C supplement to smokers to prevent or cure a deficiency.
Not getting enough of this vitamin can cause easy bruising, gingivitis and bleeding gums, dry and splitting hair, rough, dry, scaly skin, a decreased wound-healing rate, nosebleeds and a decreased ability to ward off infection, according to the University of Maryland Medical Center.
An extreme lack of vitamin C for long periods of time can cause scurvy. Symptoms of scurvy are skin that bruises easily, bleeding gums, joint pain and poor wound healing.
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