How many calories should a teenager (girl and boy)have in one day?
A:
Without more information, it is not possible to give you an absolute number of calories needed per day by an individual. The number of calories needed depends on physical size and expenditure of energy (amount and type of activity). It is however possible to give a range of calorie recommendations. For the average teenage girl the recommended daily allowance is 2200 calories, and for the average teenage boy 2500-3000 calories. The current recommendation is for calories to be derived from carbohydrate (50-60 percent) fat (20-30 percent) and protein (10-20 percent), through a well-balanced daily meal pattern. Also teenagers should be aware of the need for adequate iron and calcium intake.
Remember that exercise is very important in the equation of how many calories are needed for normal growth and development, and also in any weight reduction program. Teens should get in the habit of exercising vigorously for at least 30 minutes 3-5 times a week.
Taken from
http://www.teengrowth.com/index.cfm?action=inf o_advice&ID_Advice=2434