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.
Teens need somewhat more calories than when they were a bit younger. Teenage boys on average need 1,800 to 2,600 calories a day if they're 11 to 13 years, and 2,200 to 3,200 calories a day if they're 14 to 18 years of age. Teenage girls need more, too: 1,800 to 2,200 calories a day if they're ages 11 to 13, and 1,800 to 2,400 calories a day if they're age 14 to 18. Gender, body size, growth rate and activity level specifically determine how many calories teens need.