1. the act of attenuating or the state of being attenuated. 2. (General Physics) the loss of energy suffered by radiation as it passes through matter, esp as a result of absorption or scattering.
A healthy teenage boy may have a higher calorie intake of about 2,200 calories per day; about 61 to 86 g of fat should be consumed. Read more: http://www.livestrong.com/article/399246-a-teen-needs-how-many-grams-of-fat-per-day/#ixzz2QFhZ92Aj. For both teenage boys and girls, 5 to 6 tsp. of fat are recommended daily. Fat can't always be measured by the teaspoon, however, so it is easier to think of fat in actual percentages.
Teenage girls should eat around 1800 calories a day, but eating the same things each day isn't healthy. For a balanced diet, teen girls should eat a variety of foods every day. Girls should eat foods from all food groups each day and limit their intake of fat. No more than 35 percent of the calories a teenager eats in a day should come from fat. Protein