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provided easily understood advice on how to select nutritionally adequate diets from among .» variety of familiar foods. For adults, the basic rule was to eat four servings of fruits and vegetables, four of cereal grains, two of dairy products, and two of meats or beans each day.
Improvements in health during this century, especially since these guidelines were established, have been impressive. In 11*00, only four often infants born lived for t!5 years or more; today eight often live that long. Children today grow taller than their grandparents did. Life expectancy was less than 50 vears in
47.5%