题目
题目

FOOD20003_2025_SM1 Exam: Intro to Food Science & Human Nutrition (FOOD20003_2025_SM1)

多重下拉选择题

Scenario 2 Mr L is a 16-year-old boy who up until recently, was physically active with no known medical issues. Three years ago, the family became passionate about animal welfare and commenced a vegan diet. Lately Mr L has become irritable and lethargic, is finding it hard to concentrate at school and is too tired to take part in his weekly sporting events. While Mr L has gone through puberty, he has not had his final growth spurt and is short for his age. Mr L’s mother read on the internet that increasing zinc intakes can help with growth and has been supplementing him daily with 4 times the recommended dietary intake (RDI). His mother is concerned with his change in energy levels, and takes him to the doctor’s for a check-up.  The doctor prescribes a series of blood tests and the results are outlined in Table A. Table A. Mr L’s Blood Test Results   Parameter Patients Result Normal Range   White Blood Cells 6.0 4.5-11.0 109/L   Haemoglobin 108 120-150 g/L   Serum Iron 43 50-170 mcg/dL   % Transferrin Saturation 15 20-38 %   Ferritin 6 10-300 ng/mL   Questions:  Select the most appropriate answer for each of the blanks. Mr L's blood test results show that he is suffering from [ Select ] iron overload increased iron transport iron deficiency anaemia the early stages of iron deficiency .   (1 mark)   Mr L's low iron levels are most likely a result of all the following EXCEPT [ Select ] reduced absorption increased body needs inadequate dietary intake chronic blood loss .   (1 mark)

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思路分析
Statement restatement and option analysis: First blank: Mr L's blood test results show low Hb (108 g/L), low serum iron (43 mcg/dL), low transferrin saturation (15%), and very low ferritin (6 ng/mL). These findings collectively indicate iron deficiency rather than iron overload or any other disturbance. - Option: iron deficiency anaemia — This is the correct interpretation because one hallmark of iron deficiency is reduced ferritin along with low serum iron and low transferrin saturation, accompanied by a low Hb. The combination of iron metrics points to anaemia caused by iron deficiency. - Option: iron overload — This would present with high serum iron and ferritin, not the low values seen here, so it is inc......Login to view full explanation

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