Enough to grow: 12 year old girls are often still growing, if they have not had menses yet. Everyone needs enough calories to maintain body functioning at rest (1200 to 1500 calories a day), plus up to 2000 calories a day extra to fuel the body for all the work it does. Adolescents need more for growth. Pediatricians and dieticians can both be consulted to help determine how much a child needs to eat.
Answered 10/7/2017
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