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.
Using a teenage girlâs body weight can help estimate her individualized protein needs. Protein RDAs are calculated using 0.43 grams of protein per pound of body weight for girls ages 9 to 13 and 0.39 grams of protein per pound of body weight for teen girls ages 14 to 18.he Institute of Medicine established recommended dietary allowances, or RDAs, for protein. RDAs are general requirements estimated to meet the needs of most girls in each age group. RDAs include 34 grams of protein per day for girls ages 9 to 13 and 46 grams of protein each day for teen girls ages 14 to 18.