What You Will Learn:
American teenagers eat out more, have greater access to ready-to-eat foods and meals that require reheating or minimal preparation and have less physical activity than ever before. Teenagers from economically disadvantaged homes have more nutrition-related problems than do more affluent teens, especially vitamin A, folate and iron deficiencies. Growth spurts and the onset of menstruation during adolescence are associated with iron deficiency. There is a high prevalence of folacin deficiency in girls ages 10-19. The association of folate deficiency and neural-tube defects should be a concern for girls entering the childbearing age. For more information on the relationship of folic acid on birth defects, refer to the Centers for Disease Control. Read the information to learn more about the importance of folic acid in preventing birth defects. More than 20% of 12-to-19-year-old adolescents are currently obese, and adolescent obesity seems to be on the rise. Conversely, there is an overemphasis on being thin for girls and muscular for boys. Obese adolescents enter the job market at lower salaries and tend to have higher incidences of low self-esteem and depression.
In 2009, students in grades 9 to12 in Louisiana answered a Youth Risk Behavior Survey (YRBS) conducted by the Louisiana Department of Education. The survey noted that:
Despite teenagers' familiarity with nutrition information, many don't consume enough of some foods, including fruits and vegetables. Many girls need to eat more calcium-rich foods. Additionally, most teens need to eat foods that are lower in fat and sugars.
The Dietary Guidelines for Americans apply to teenagers with a few additions. The energy needs of adolescents vary greatly on an individual basis. All adolescents should eat the minimum number of servings from each food group daily. Lower-fat foods and those with little sugar are wise food choices for all teens. Some very active teens may need to eat extra servings from the major food groups and possibly a few servings from the extra food group that contain some fat and sugar. Teens need three servings of foods from the milk group and other good dietary calcium sources, such as canned fish with soft bones (tuna, for example), legumes, broccoli, calcium-enriched grain products, calcium-fortified foods and beverages, lime-processed tortillas, seeds and nuts.
How Much Should I be Consuming of Each of the Food Groups?
What is a serving? Here are some visual cues to help determine a serving size. Measuring cups and scales can be useful, but the following serving size visual cues can help:
Deck of cards = three ounces of meat Ping pong ball = one ounce of hard cheese Baseball = one medium fruit or one cup of lettuce or cereal 12-ounce can of soda = two servings of juice or one and one-half servings of milk
Do teens need extra protein to build muscles? No. Two to three servings a day (five to seven ounces) from the meat group provide enough protein for the growing years.
The seventh dietary guideline for teens is to promote an alcohol-free and drug-free lifestyle. Alcohol provides calories only, with no other significant amount of nutrients. Teenagers who are interested in healthy food choices should stay away from alcoholic beverages. Alcohol provides seven calories per gram. Carbohydrates and protein provide four calories per gram. Fat provides nine calories per gram.
Early adolescence (ages 11-14) marks a period of rapid change in physical and emotional maturation. Chronological age may not match social and physical development. Teens make many of their own food choices and decisions about physical activity and health. Girls' growth spurts often occur before those of boys. Individual growth patterns are similar to those of their relatives. Teens often grow taller before developing an adult shape. Weight and other measures do not necessarily indicate the amount of body fat of an individual. Bigger, more muscular kids aren't necessarily overweight; and tall, slim kids aren't always underweight.
All people, including teens, need to listen to their internal hunger cues. That is, do not let the amount of food on a plate determine how much should be eaten. Eating slowly can give a person time to recognize that he or she is full. School lunch menus are designed to provide one-third of the calories needed by the teenager needing the most calories. Teenagers who need the most calories are tall, growing and very active. Smaller-framed teens who are less-active need fewer calories. Students should use the "offer vs. serve" option in the school lunch program to select the number and type of food items to eat. The same plan of action can be used when eating out.
Teenagers should exercise regularly and manage weight rather than focus on weight loss. Acceptance of a healthy, rather than an ideal, body image is necessary. We have certain genetic traits that will affect the shapes of our bodies. Weight loss will be proportional. Low levels of physical activity lead to obesity.
Benefits of physical activity:
Every teen should accumulate 30 minutes or more of moderate physical activity on most, preferably all, days of the week. Moderate physical activity is defined as a brisk walk at three to four miles per hour. More physical activity can be helpful to a point. Increased physical activity will not result in short-term weight loss unless there is a reduction in the number of calories. However, increased physical activity is important to overall weight management. Overweight teenagers are more likely to become overweight adu lts. The later into adolescence that obesity persists, the greater the likelihood that an obese adolescent will become an obese adult.
Before, during and after exercising, teens should drink plenty of liquids to replenish the fluids lost. Water, one of the six basic nutrients, is the best fluid.
Teenagers need to accept and respect differences in body shapes. Differences in growth rate and body structure make every person's weight and height unique. Much of a person's body shape and size is inherited.
Teens need about 30 minutes of moderate physical activity daily, or 15 to 20 minutes of more intense physical activity at least three times a week. Physical activity must be continued throughout one's lifetime, rather than only for a day or a week. Older teens become less physically active than younger teens, especially girls.
Here are some good ideas of ways to get physical:
Dieting to lose weight is not recommended for most adolescents, especially young adolescents. Yet, over half of all teens feel the need to diet to either lose weight or maintain weight. Teens who are concerned about their body weight should talk to their doctors or other health care professionals.
Eating disorders, such as bulimia and anorexia, may start with an ordinary weight-loss diet. Talk to a school nurse, social worker or medical professional if you are concerned about a student.
Some teens need more sleep because their bodies are changing and growing rapidly. Many teens would prefer to sleep later than to wake up in time to eat breakfast. But by lunchtime they are starving. Sleep and exercise are two more ways to get energy. Eating breakfast gives teens more energy throughout the day, helps them concentrate in class, helps be less moody around friends and control their appetites at lunch.
If you have time to eat breakfast, fruit, whole-grain products (oatmeal, cereals, breads) and lean meats are all good breakfast choices. If you do not usually have time to eat breakfast in the mornings, plan and package a few snacks for breakfast the night before. Fruit, yogurt, bagels, crackers, cheese and sandwiches are quick and easy foods to munch while waiting for the bus or for a class to begin. School is a great place to eat breakfast. Soft drinks and candy provide calories but little else, making them not good options for breakfast. The lift that those foods give is not long-lasting and does not contribute to achieving an overall healthy diet. Also, a regular exercise plan helps to give energy. The more you move, the more energy you have.
Students who eat school breakfast:
Eat meals at regular times. Skipping meals can lead to overeating, especially snack foods. Eating snacks is OK, but choose ones that fit into MyPlate.
Click here for the Snack Attack facts.
For party ideas, serve foods such as vegetable pizzas, popcorn, oatmeal cookies, and non-alcoholic fruit and club soda beverages.
Setting Goals for Dietary Improvements
Keeping a food and activity diary helps teenagers note their eating and activity patterns, identify their strengths and weaknesses and set goals for improvement or maintenance.
Nutrition education is most successful when it is behaviorally oriented and emphasizes skills needed to maintain specific, healthy eating behaviors, such as eating more fruits and vegetables. The coordination of classroom and cafeteria learning experiences promotes opportunities to practice skills and reinforce attitudes needed for behavioral changes.
The Centers for Disease Control (CDC) recommends effective nutrition education should include:
Students are more likely to make healthy eating choices when they receive consistent, reinforced messages from a number of creditable sources within an environment that encourages healthy choices. Collaboration among school food service staff, teachers, the community, families and institutional services is necessary.
Learning activities can include:
Healthy teenagers need to know that:
2009 Louisiana Youth Risk Behavior Survey Report -- Summary. Bureau of Student Services, Louisiana Department of Education, 2009.
yourSELF Nutrition Education Kit for Middle School Teachers. United States Department of Agriculture, Food and Nutrition Services, 1998.
Healthy People 2020 - Draft for Public Comment. U.S. Department of Health and Human Services, Office of Public Health and Science, 2011.
Centers for Disease Control and Prevention: Adolescent and School Health, 2011.
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