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.
How Many Grams of Fat Per Day. The number of grams of fat you can eat depends on the total number of calories allotted for your diet plan each day. Fat has 9 calories per gram. So someone who eats 2,000 calories per day is shooting for 20 to 35 percent of those calories from fat -- which is between 44 and 78 grams of fat per day.