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.
Most of these calories should come from nutritious foods rather than snack foods and fast food so their growing bodies are fueled healthfully. Boys between the ages of 11 and 13 need 1,800 to 2,600 calories per day while boys ages 14 to 18 need between 2,200 to 3,200 calories per day.
Nonetheless, Health Canada suggests that daily caffeine intake for this age group be no more than 2.5 mg/kg body weight. This is because the maximum adult caffeine dose may not be appropriate for light weight adolescents or for younger adolescents who are still growing. The daily dose of 2.5 mg/kg body weight would not cause adverse health effects in the majority of adolescent caffeine consumers. This is a conservative suggestion since older and heavier weight adolescents may be able to consume adult doses of caffeine without suffering adverse effects.