the ideal

i took a test in my health class today and decided to do some figuring after i finished. according to the "ideal" formulas, am the ideal weight for a person of my stature: 105 lbs. according to the same sources, i should be consuming 1600 calories every day to support my weight and activity level. well, this of course leads me to question how much food equals how many calories. i checked the backs of a couple things when i got home and mostly just debunked my faith in the fda.
a single serving of plain (as in no sauce, dressing, or salt) cooked pasta is 1 cup. this cup of noodles contains 210 calories; a serving of 2% milk is 8 ounces (half a soda can) and contains 180 calories; 1 cup of chili has 270 calories; 1/2 cup of peaches contains 80 calories; 3 pickles contain 5 calories (the same as a stick of gum); i couldn't find the calories for the carrot sticks and celery. now according to the fda, i'm supposed to have at least 6 servings of bread/pasta (1260 calories), 3 servings of milk (540), 2 servings of fruits (160), 2 servings of meat (340), plus 3 servings veggies (we'll be kind and count the 15 from the pickles), and enough water to cook the 6 servings of pasta. all of this comes to a grand total of 2315 calories. with this many calories in my diet, i would supposedly gain 2 lbs a week, even without the pasta sauce. i would also be extremely bloated, and i didn't even get pasta sauce.
there's something wrong with this. obviously, the "ideal diet" has not gotten me to my ideal weight and consumption level. on the flip side, however, were i to only eat the 1600 calories prescribed to me, i would be left with 3 cups of pasta, a cup of pasta sauce, a single 6 oz yogurt, 1/2 cup of peaches, and a tall glass (24 oz) of milk. this still leaves me hungry at the end of the day.
perhaps this helps explain the staggeringly high--and rising-- numbers of both anorexic and obese people in the united states. these are not words of great wisdom. problem.