Body fat caliper.
The United States Department of Agriculture (USDA) food pyramid was first introduced in 1992 as a dietary tool to help encourage better eating. However, according to the University Of Pennsylvania Office of Health Education, with the rate of obesity continues to rise in America, are questions being raised about the low-fat, high-carbohydrate diet is really effective and what problems the system could have.
Lack of distinction Specific Foods
The two main offenders here is the bread, cereal, rice, pasta and food group and meat, poultry, fish, dry beans, eggs and nuts — or protein– food group. The grain group of the pyramid not distinguish refined carbohydrates from whole grains, which are harmful because refined carbohydrates like white bread act much like sugar and lack a lot of fiber and nutrition of whole grains. Similarly, failing protein food group to differentiate fatty sources of protein like red and processed meat from healthier sources of protein, such as fish, nuts or legumes. By lumping these foods together, the USDA food pyramid that actually leads to unhealthy diet choices, says Houghton Mifflin Harcourt Education Place.
Serving Size Problems
There are two major problems with portion sizes used by the USDA food pyramid. First, the sizes are much smaller than what most Americans actually eat today, it means when the food pyramid tells someone to eat six to 11 servings of grains, that person can eat what they consider a serving — and therefore too much. This is compounded by the other major problem, which is that many foods’ serving sizes are not consistent with the food pyramid their sizes. For example, considering the pyramid a slice of bread as serving size, but many bread producing consider two slices one serving size.
Lack of Good Fats
In the USDA food pyramid, all fats and oils are believed to be unhealthy, and as such, it is recommended to be used sparingly. But many unsaturated fats are actually good for the heart, and those found in fish, vegetable oil, nuts and whole grains. Saturated and trans fats are unhealthy and should be used sparingly, but should the pyramid include a daily diet of healthy fats, the Houghton Mifflin Harcourt Education Place says.
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