There is no specific food pyramid for one same person. Let's look into details. A family whereby there is a sick grandmother, an aged grandfather, working parents [one in office, another in the field], an adolescent, two growing babies and a pregnant relative will need to follow at least 6 different food pyramid.
And a vegetarian's food pyramid is different again. Thus we follow a food pyramid according to our age, our needs and our budget. Some people in this world are so poor that they could not afford to eat right! Where is there this chance to choose the right food? They can just eat to fill their stomach only...
A food pyramid is just a guideline to the amount of the correct foods we need to consume to maintain an ideal weight and good health. Bad habits die slow. But to be balanced in still the motive of all food pyramids.
So check your age category... and go for a personalized food pyramid which is the best. It pays to follow THE CORRECT FOOD PYRAMID!