Vitamin C is a water-soluble, antioxidant vitamin. It is important in
 forming collagen, …  min C in a selected serving size. The U.S. AI for 
vitamin C …
Human Nutrition, 1787 Neil Avenue, Columbus, OH 43210
Vitamin C (Ascorbic Acid)
his fact sheet is one in a series containing information to help you 
select foods that provide adequate daily amounts of vitamins, minerals, 
and dietary fiber. The Dietary Guidelines Advisory Committee just 
released the Dietary Guidelines for Americans 2005 that convey the 
following nine major messages concerning these topics: · Adequate 
nutrients within calorie needs · Weight management · Physical activity ·
 Food groups to encourage: fruits and vegetables, whole grains, and 
nonfat or low-fat milk and milk products · Fat · Carbohydrates · Sodium 
and potassium · Alcoholic beverages · Food safety
tended to consume less than men of the same age. Most nutrition 
scientists believe that there are no known advantages in consuming 
excessive amounts of vitamin C. The majority of vitamin C is consumed 
through fruits and vegetables in the diet.
How can we get enough vitamin C?
Eating a variety of foods that contain vitamin C is the best way to get 
an adequate amount each day. Healthy individuals who eat a balanced diet
 rarely need supplements. Select foods that are good sources of vitamin C
 as you follow the Dietary Guidelines.
How to prepare foods to retain vitamin C.
Vitamin C can be lost from foods during preparation, cooking, or 
storage. To prevent loss of vitamin C: · Serve fruits and vegetables raw
 whenever possible. · Steam, boil, or simmer foods in a very small 
amount of water, or microwave them for the shortest time possible.
Why do we need vitamin C?
Vitamin C is a water-soluble, antioxidant vitamin. It is important in 
forming collagen, a protein that gives structure to bones, cartilage, 
muscle, and blood vessels. Vitamin C also aids in the absorption of 
iron, and helps maintain capillaries, bones, and teeth.
Where to find vitamin C in the Food Guide Pyramid.
What is a "good source" of vitamin C?
A "good source" of vitamin C contains a substantial amount of vitamin C 
in relation to its calorie content and contributes at least 10 percent 
of the U.S. Adequate Intake (AI) for vitamin C in a selected serving 
size. The U.S. AI for vitamin C is 90 milligrams per day for men and 75 
milligrams per day for women. The U.S. AI given is for adults ages 
1950, and the recommended changes are for pregnant and/or lactating 
women. Consult your healthcare provider for these differences. The AI is
 also increased for smokers. Smoking increases oxidative stress–as a 
result, it is recommended that smokers consume 35 more milligrams of 
vitamin C per day.
Fats, Oils, Sweets–nothing Milk, Yogurt, Cheese– nothing Vegetables–red 
pepper, green pepper, broccoli, kohlrabi, tomato juice, tomato, potato, 
cabbage, spinach Meat, poultry, fish, dry beans, nuts, eggs–nothing 
Fruits–guava, papaya, orange juice, orange, strawberries, grapefruit, 
cantaloupe, mango, tangerine
Do we get enough vitamin C?
According to recent surveys of the U.S. Department of Agriculture 
(USDA), the average intake of vitamin C by American adults was over the 
AI for vitamin C. Women
Grains–nothing













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