Question: how much calories should a 13 year old boy eat to lose weight?
Answer: Daily Caloric Needs by Age It is recommended that moderately active boys consume around: 6 to 8 years old: 1,600 calories per day. 9 and 10 years old: 1,800 calories per day. 11 years old to 13 years old: 2,200 calories per day.