New trition the Revised Food Guidance System（PPT 20页）.ppt

Dealing with Questions and Criticisms about My Pyramid Questions people might have: Why did USDA change the Food Pyramid? Wouldn’t it be simpler just to have one calorie level (instead of 12)? Why are we using cups and ounces (instead of servings)? Is it really true that “all foods can fit in moderation”? How realistic is it for Americans to follow My Pyramid? Why did the Pyramid Change? History of USDA’s Food Guidance Dietary Reference Intakes (DRIs) Recommended intake levels for vitamins, minerals, and macronutrients Current recommendations issued from 1997-2004 Dietary Guidelines for Americans, 2005 Dietary recommendations for health promotion and chronic disease prevention Consumer Researchon the Food Guide Pyramid “Healthy eating” means variety, moderation, and eating fruits and vegetables. Pyramid depicts a healthy diet but is complicated Limited understanding of food group Need help understanding whole grains, types of fat A “serving” is “what is on my plate” --2005--MyPyramid Why not use just one Pyramid? Determine Calorie NeedsEstimated Energy Requirements* for males Can all foods fit? Comparison of Regular vs. Fast Food Lunch Calories from day with turkey sandwich, milk and fruit: 1837 calories Calories from day with hamburger, fries, and soda: 2014 calories Discretionary Calories May be used to: Increase amount of food selected from a food group Consume foods that are not in the lowest fat form—such as 2% milk or medium-fat meat or items that contain added sugars Add oil, fat, or sugar to foods Consume alcohol Can Americans really follow My Pyramid? MyPyramid Recommendations Compared to Consumption Fat, Oil Added Sugars Allowances Compared to Consumption * 天马行空官方博客：/tmxk_docin ;QQ:1318241189 天马行空官方博客：/tmxk_docin ;QQ:1318241189 1940s 1950s-1960s 1970s 1992 2005 Food for Young Children 1916 *From the National Academy of Sciences, Institute of Medicine Dietary Reference Intakes Macronutrient Report Daily Amounts in cups or ounces Tota