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.
Unfortunately, most teens consume far too much sugar. Data from the National Health and Nutrition Survey shows that the average teenager consumes 119 g, or about 28.3 tsp., of added sugar per day, note researchers at Emory University. This sugar intake represents 476 calories, or about 21.4 percent of an average teenagerâs total caloric intake.