For Durkheim the result of the division of labour is positive in that there is no need to compete in the sense of struggling just to survive. Division of Labour. The division of labour is, then, a result of the struggle for existence, but is a mellowed dnouement.
Recommended daily calorie intakes vary across the world. According to the National Health Service (NHS), UK, the average male adult needs approximately 2,500 calories per day to keep his weight constant, while the average adult female needs 2,000. US authorities recommend 2,700 calories per day for men and 2,200 for women.
According to the U.S. Department of Agriculture, women ages 19 to 30 generally need 1,800 to 2,400 calories, women ages 31 to 50 require 1,800 to 2,200 calories and women over age 50 need about 1,600 to 2,200 calories each day to maintain a healthy body weight.