Dr. Anastasia Searcy, DO is a family medicine specialist in Vermillion, SD and has been practicing for 8 years. She graduated from Des Moines Univ Coll Of Osteo Med & Surg in 2007 and specializes in family medicine.
Girls aged 11 to 13 need 1,800 to 2,200 calories per day while those between the ages of 14 and 18 need 1,800 to 2,400 calories per day, according to the Academy of Nutrition and Dietetics. One of the main factors affecting the calorie needs of teenagers is activity level.
Boys ages 14  18 Sedentary: 2,200 calories Moderately active: 2,400 to 2,800 Active: 2,800 to 3,200. As you can see the highest calorie intake needs are for the ages where you experience your growing spurts. The best person to consult with for your teen calorie intake is your doctor. Getting the Right Calories.