Calories provide energy, which we need to survive and perform daily activities. The calories we get from food and beverages allow us to breathe, walk, run, laugh and even pump blood. Calorie needs vary depending on age, sex, height and activity level. The body requires more calories during the teenage years than any other time of life. During this period of rapid growth and development, boys require an average of 2,800 calories a day, while girls require an average of 2,200 calories a day.
- Not Active – Minimal activity, only moving for tasks needed for daily life, such as walking to the mailbox.
- Moderately Active – Engages in activity needed for daily living, plus activity equivalent to walking 1.5 to 3 miles daily, or 30 to 40 minutes.
- Active – Engages in activity needed for daily life, plus activity equivalent to walking 3 or more miles daily, or more than 40 minutes.
A Well-balanced Diet
The amount of calories in food vary depending on how much carbohydrate, protein and fat it contains – both carbohydrates and protein provide four calories per gram, while fat provides nine calories per gram. It is important that teens obtain calories from nutrient-dense sources, which are higher in vitamins, minerals and fiber, and limit added sugars, salt and saturated fats. A well-balanced diet includes fruits and vegetables, whole grains, healthy fats, dairy or dairy alternatives and protein foods.
Body image may be a concern for teens, as they start to form thoughts and feelings about the way they look. It can be positive or negative and may have little to do with actual appearance. Parents are the most influential role model in a teen’s life, so it is important to teach healthy body image by being a positive example. Avoid dieting, eat an overall balanced diet and try not to talk negatively about your body around your children. Avoid putting emphasis on people’s physical appearance and engage in discussions with your teen about body image portrayed in media. Encourage your teen to exercise for energy, health and strength rather than for outward appearance.
Just like adults, teens come in all shapes and sizes. A balanced diet and regular physical activity will help your teen grow into their healthy weight. While nearly 20 percent of teens have an obese body mass index, over 5 percent of adolescent girls meet the criteria for an eating disorder. If you are concerned about your teen’s weight or relationship with food, seek guidance from a registered dietitian nutritionist or physician.