How many calories should a 19 year old consume?
About 1,800 calories to 2,100 calories, with healthy choices and exercise.
An 11-year-old girl who leads a sedentary life is advised to consume approximately 1,600 calories per day. A much more active 11-year-old girl should consume 2,200 calories daily. An inactive boy of the same age should consume about 1,800 calories per day, while an active 11-year-old boy should consume 2,600 calories per day.
Calories are used to express the heat output of an organism and the fuel or energy value of food. Baisicaly, they're measurements of heat measured in food and in the body. And the average person if they're 40 should consume 2000 calories a day, and the average 9 year old should consume about 1500 calories a day.