Complex foods need more cooking time; therefore, they're less nutritious than simple foods.
b. simple foods are less harsh on the digestive system; therefore, simple foods are easier to digest.
c. the body prefers simple foods because they provide more energy than complex foods.
d. it takes time and energy for your body to break down more complex foods, whereas simple foods are broken down more quickly.

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).