* The
National Cancer Institute estimates that about one-third
of all cancer deaths may be related to the foods we eat.
Studies at the National Cancer Institute suggest that
eating foods high in fiber may reduce risks of cancers
of the colon and rectum. Adult Americans now eat about
11 grams of fiber daily according to NCI studies. NCI
recommends that Americans increase the daily amount of
fiber they eat to between 20 and 30 grams, with an upper
limit of 35 grams. The NCI also emphasizes the
importance of choosing fiber rich foods, not
supplements. Good sources of fiber are whole grain
breads and bran cereals, vegetables, cooked dry peas and
beans, and fruits.
* We know that diets high in
fats of all kinds have been linked to certain cancers,
particularly those of the breast, colon, lining of the
uterus, and prostate gland. Some studies have suggested
that fat may act as a cancer promoter (an agent that
speeds up the development of cancer).
* There is
some evidence that diets rich in vitamin A, vitamin C,
and beta-carotene (the plant form of vitamin A) may help
reduce the risk of certain cancers. The evidence we have
about vitamins A and C comes from studies of these
vitamins as they are found in foods. That is why NCI
recommends that you eat a variety of foods rich in
vitamins rather than relying on vitamin supplements.
Good sources of vitamin A include yellow-orange
vegetables such as carrots, winter squash, sweet
potatoes and pumpkin; and yellow-orange fruits such as
peaches, cantaloupes and mangoes. Sources of vitamin C
include dark-green leafy vegetables such as kale,
spinach, and watercress; broccoli and asparagus; and
tomatoes. Some fruit sources of vitamin C are oranges,
lemons, grapefruit, peaches, berries, and cantaloupe.
* There is some evidence that vegetables in the cabbage
family may help protect against cancer of the colon.
These vegetables are also good sources of fiber,
vitamins, and minerals. Cabbage family vegetables
include cabbage, broccoli, cauliflower, Brussels
sprouts, collards, kale, turnips, mustard greens, turnip
greens, kohlrabi, watercress and radishes.
Reducing Your Risk of Heart Disease and Cancer
Based on what we know, the National Heart, Lung,
and Blood Institute and the National Cancer Institute
have joined together to suggest some ways you may reduce
your risks of heart disease and cancer. These
suggestions emphasize the need to eat a variety of foods
each day. They also include some "mealtime strategies"
that you can use to plan meals that avoid too much fat,
saturated fat, cholesterol, and sodium, and that help
you to get adequate starch and fiber. These strategies
are consistent with the Department of Agriculture and
Department of Health and Human Services Dietary
Guidelines for Americans. These strategies should
encourage you to think about the foods you eat, how to
prepare them, and what food choices you can make when
you go grocery shopping or eat away from home.
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