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- FUNCTION-
-
- Vitamin C helps to promote
- healthy gums and teeth by
- the formation of collagen.
- This structural protein sup-
- ports teeth, bones, skin, and
- cell walls. Vitamin C acts as
- an antioxidant to protect
- cells. It protects iron and
- promotes its absorption in
- the intestine. Adequate in-
- takes may help protect
- against cataracts and pro-
- mote wound healing.
-
-
- FOOD SOURCES-
-
- Citrus fruits, strawberries,
- tomatoes, broccoli, greens,
- sweet potatoes, white pota-
- toes, cantaloupe, and forti-
- fied breakfast cereals.
-
-
- RISKS WITH EXCESS-
-
- There is no risk with excess
- vitamin C from food sources,
- but megadoses from supple-
- ments can cause diarrhea
- and may interfere with cer-
- tain medical tests and anti-
- coagulant medications. Peo-
- ple taking large doses of
- vitamin C may experience
- rebound scurvy if stopped al
- at once. They are advised
- to decrease amounts over a
- 2 to 4 week period.
-
- RISKS WITH DEFICIENCY-
-
-
- Because vitamin C is easily
- obtained from dietary
- sources (one 8-ounce glass
- of orange juice), deficiency
- is very rare in the United
- Sates. Scurvy is one def-
- iciency experienced in the
- past.
-