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.
1 A 2,800 calorie per day diet: 31 grams of saturated fat or less, 93 grams of fat or less. 2  Keep in mind that most women should have a diet of no more than 2,000 calories/day, men no more than 2,500/day.) If you are trying to lose weight, 30 grams of fat. 3  If you are a young teenager about 40-65 grams of fat.educing it by 500 calories per day is reasonable.   Then you have to figure out how many calories from fat in your low fat diet. If it is 20% that would be 0.2 x daily calories.   If your protein is 30% of daily calories that would be 0.3 x daily calories.