Caloric Intake:

The daily caloric intake of a person can vary due to different variables such as age, gender, and activity. A 15-year-old boy, who about 5 to 6 feet tall and 130 lbs. and participates in moderate physical activity 30 to 60 minutes every day needs about 2,800 calories daily to be healthy.  A 15 year old girl about 5 to 6 feet tall, 115 pounds, and is active will need about 2,000 calories a day to be healthy.  A lactose teen will need to find a way to get there calories while avoiding lactose foods AND unhealthy foods.  To accomplish this, they would have to eat foods like what we have in our meal plan. 

Have A balanced diet!  (A lactose teen can't have anything in the bottom left corner)

Resources:

http://wiki.answers.com/Q/How_many_calories_should_a_female_teenager_take_in_per_day

http://www.livestrong.com/article/131657-how-many-calories-does-teenage-boy-need/