Recently,Miriah participated in a study that was designed to determine how much iron is necessary to prevent iron deficiency.Within a few weeks of consuming an iron-free diet,Miriah's red blood cells began to show signs that they lacked iron,and she began to complain about feeling tired.At that point,the researched added some iron to Miriah's food,so her daily intake of the mineral would be 1 mg.After 1 week,the researchers checked the iron content of Miriah's blood,and although it was higher than the earlier value,she still complained about feeling tired.In the weeks that followed,the scientists continued to increase Miriah's iron intake by 1 mg/week and check her for signs and symptoms of iron deficiency.After a week of taking 6 mg of iron/day,she reported feeling like "her old self" and having plenty of energy.Based on this information,the researchers concluded that Miriah's
A)body required 6 mg iron/day.
B)UL for iron was 6 mg,plus 3 mg as a margin of safety.
C)RDA for iron was 6 mg.
D)minimum Daily Value was 6 mg iron/day.

Question

Quizplus · Accepted Answer

The researchers concluded that Miriah's body required 6 mg iron/day to prevent iron deficiency and restore her energy levels. This is based on the fact that her symptoms of iron deficiency resolved only after she had been consuming 6 mg of iron per day for a week. The other options are not supported by the information given in the passage. The concept of UL (tolerable upper intake level) and RDA (recommended dietary allowance) are not applicable in this case as the study was focused on determining the amount of iron necessary to prevent deficiency, not on identifying upper or lower limits of safe intake. The term "minimum Daily Value" is a standard used in nutrition labeling and does not provide information about individual nutrient needs.

Recently,Miriah Participated in a Study That Was Designed to Determine