In 1992, the United States Department of Agriculture published the Food Guide Pyramid. In our opinion, and in the opinion of most nutrition-oriented physicians, this recommended pyramid is a representation of why so many Americans are confused about what they should eat. Furthermore, we find that people who follow this type of nutritional program are more likely to be obese and to develop other chronic illnesses.
It is sad to say, but the USDA may not have your best health interests at heart. This department has what many would call a "conflict of interest." It represents the food industry and is in charge of developing policy for and educating consumers about nutrition. Look at the emphasis on the number of servings of bread, rice, cereal, and pasta. These are exactly the types of foods that, for the most part, are eaten in excess and that contribute to weight problems, heart disease, and many other insulin-associated conditions. Another problem is that the USDA sparingly recommends fats and oils. Any nutrition expert will tell you that essential fatty acids are crucial for good health, and most of the population is not consuming these fats.
USDA Food Guide Pyramid
Source: United States Department of Agriculture (USDA) and the Department of Health and Human Services (HHS)