How many calories for teenager to gain?

The number of calories a teenager needs to gain weight depends on several factors, including age, sex, activity level, and overall health. Generally, a calorie surplus of about 250 to 500 calories per day is recommended for healthy weight gain. For example, teenage boys might need around 2,800 to 3,200 calories daily, while girls may need about 2,200 to 2,800 calories. It's essential for teens to focus on nutrient-dense foods to ensure healthy growth and development.