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Gadsden State Community College - HEC 140 Case Study 13A: Trace Mineral Deficiencies Belinda is a 10-year-old elementary school student who has come in for a physical examination

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Gadsden State Community College - HEC 140

Case Study 13A: Trace Mineral Deficiencies

Belinda is a 10-year-old elementary school student who has come in for a physical examination. She is 55 inches tall and weighs 120 pounds. Her doctor calculates her BMI at 27.9 (98th percentile for her age).

Concerned about her obesity, Belinda's doctor asks about her diet and her physical activity. Her mother reports that Belinda has become "lazy" and does not like to play outside with her friends after school. She says she is more irritable than usual and complains about helping with household chores. Her mother worries that she may be depressed, although she can think of no family issues that may be responsible for this behavior. Belinda sometimes skips breakfast or has cereal and toast in the morning; she takes chips, a juice drink, and a cheese sandwich made with white bread for lunch; and has a toaster pastry or cookies with milk for a snack after school. She doesn't particularly like meat and frequently asks for buttered pasta with cheese for dinner. Belinda says she eats vegetables "when my mom buys them." A blood test reveals a normal hemoglobin level, low serum iron, moderately elevated transferrin, and low transferrin saturation.               ...

 

1)Worldwide, how many people are estimated to have iron-deficiency anemia?          1.5 to 2.0 billion Based on her signs and symptoms, in what stage of iron-deficiency is Belinda?

2. The hemoglobin precursor that accumulates in iron-deficiency is          .          

3. Belinda doesn't care for meat and rarely eats it. What percentage of dietary iron is absorbed from vegetarian diets? 

4. What percentage of dietary iron is absorbed from mixed (i.e., those that also contain meat) diets?

 

5. What hormone, produced by the liver, is central to the regulation of iron balance?     

 

6. Suppose Belinda were to switch from buttered pasta with cheese to pasta with marinara sauce. If her mother were to prepare the pasta sauce in a cast iron pan, the iron content of a single serving would increase from 0.61 mg to   .