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.
Fat. The Institute of Medicine recommends that teenage boys ages 13 to 18 consume 25 to 35 percent of their total calories from fats. This is equivalent to eating 56 to 78 grams of fat for a 2,000-calorie diet, 72 to 101 grams for a 2,600-calorie intake and 89 to 124 grams of fat per day when consuming a 3,200-calorie diet. Healthy fats for teens include olive, canola, walnut and flaxseed oils, purified fish oils, avocados, olives, peanut butter, nuts and seeds.