Erin is a 28-year-old professional woman who is 5 feet 8 inches tall and vigilantly maintains her weight at 118 pounds by following a lacto-ovo (non-fat milk and egg whites only) vegetarian diet that supplies approximately 1200 calories a day. With her understanding that protein should provide between 10 and 35 percent of her daily calories, she reasons that her daily intake of 40 grams of protein from milk, eggs, legumes, and nuts is adequate for her needs. She is concerned, however, that she has been sick more than usual and has experienced two stress fractures in her leg over the past three years while exercising. Erin decides to compare the protein quantity and quality of a liquid amino acid supplement this product to an egg. Initially she learns that 1 whole egg contains 18 amino acids (9 essential amino acids and 9 non-essential amino acids). ½ teaspoon of liquid amino acid product contains 16 amino acids (9 essential amino acids and 7 non-essential amino acids). Then she examines the Nutrition Facts label for these two products. ANSWER TWO OF THE FOLLOWING 12 QUESTIONS. State the number of the question that you are answering. Show how you came to your conclusions if calculations are needed. Pick questions that have not already been answered. When responding to a classmate, state why you agree or disagree and cite page numbers from the text for your main post and your response. MAKE SURE USE THIS SOURCE ONLY AND CITED PG. NUMBER ON POST AND RESPONSE TO CLASSMATE WHEN YOU ARE DONE IT SHOULD BE THE POST AND RESPONSE ( UNDERSTANDING NUTRITION WHITNEY ROLFES 14 EDITION 1. Explain why Erin’s assumptions about her protein needs are unrealistic based on her current weight. 2. Assuming a healthy weight for Erin is 141 pounds, use the information from the “How to” feature (p. 189) in this chapter to calculate her recommended daily protein requirement. Show your calculations. 3. What percentage of Erin’s current energy intake comes from protein? Remember that protein provides approximately 4 kcalories per gram.) Is this adequate? Why or why not? 4. Erin’s energy needs for a healthy weight are closer to 1600 calories a day. How might her low calorie intake influence her protein status and possibly contribute to her current health issues? 5. How would you explain to Erin how her low intake of calories and protein contribute to her risk for osteoporosis? 6. Assuming Erin consumes 20 grams of protein from whole grains, vegetables, and legumes each day, calculate how she can meet the remainder of her protein needs with dairy foods and egg whites. 7. Erin is considering using the amino acid supplement shown above. What can Erin learn about the protein quantity of one serving of liquid amino acid as compared to one whole egg? 8. Approximately how many teaspoons of liquid amino acid would Erin need to eat every day to receive the amount of protein in one egg? (Notice that the nutrition information for this product is for a ½ teaspoon serving.) 9. Looking at the Nutrition Facts label, what other important nutrients besides protein will Erin find in an egg that are not present in her amino acid supplement? 10. What is the sodium content of an egg compared to one serving of the liquid amino acid product? 11. According to information in this chapter, what is the safest way for Erin to obtain the protein and amino acids she needs? Why 12. What precautions should Erin take regarding the use of amino acid supplements
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