EASC-101 Lecture Notes - Lecture 7: Nitrogen Balance
25 Mar 2016
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Document Summary
Recommendation is higher for infants & growing children. Upper limit: 35% of total calories: significantly higher than average intakes. People really need: dri recommendations assume a normal mixed diet. Diet includes a combination of plant & animal protein. Not all proteins are used with 100% efficiency: even considering this, the recommendations are generous. The amount of nitrogen consumed compared with the amount excreted in a given time period. Studies of nitrogen balance underlie the dri. Committee"s recommendations: under normal circumstances, healthy adults are in nitrogen equilibrium = zero balance. Nitrogen in > nitrogen out: negative nitrogen balance. People really need: growing children add new blood, bone & muscle cells to their bodies every day. Must have more protein & more nitrogen in their bodies at the end of each day than they had at the beginning. A growing child is in positive nitrogen balance: as is a pregnant woman.
