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.
Younger women generally need more calories than older women, as they tend to have more muscle mass and be more active. A sedentary woman aged 19 to 30 years needs between 1,800 and 2,000 calories daily, while moderately active women need 2,000 to 2,200 calories and very active women need 2,400. A woman aged 31 to 50 years needs 1,800 to 2,200 calories daily, and should increase her caloric intake by 200 to 400 calories to account for moderate in activity.