Josh was a participant in a clinical study to determine how much thiamin cures beriberi,the vitamin's deficiency disease.During the study,Josh consumed only a formula diet that was nutritionally complete,except it did not contain thiamin.Within a few weeks,Josh developed beriberi.At that point,researchers gave 0.20 mg thiamin to Josh each day for a week,but his signs and symptoms of beriberi remained.In the weeks that followed,the scientists continued to increase Josh's intake of the vitamin by 0.2 mg/week.After a week of taking 0.6 mg of thiamin/day,Josh reported feeling much better.Based on this information,the researchers concluded that Josh's
A)AMDR for thiamin was between 0.2 and 0.6 mg/day.
B)requirement for thiamin was at least 0.6 mg/day.
C)requirement for thiamin was 0.20 mg/day.
D)RDA for thiamin was 0.6 mg/day.

Question

Quizplus · Accepted Answer

Josh developed beriberi due to thiamin deficiency and his symptoms did not improve with 0.2 mg thiamin/day, indicating that his thiamin requirement was higher than 0.2 mg/day. The gradual increase in thiamin intake and improvement in his symptoms after taking 0.6 mg/day suggests that his thiamin requirement was at least 0.6 mg/day. Therefore, choice B is the best answer. The other options are either too low or do not provide enough information to estimate Josh's thiamin requirement. The RDA for thiamin is higher than Josh's requirement as it is set to meet the needs of most individuals in a population, and Josh's individual requirement may differ depending on various factors.

Josh Was a Participant in a Clinical Study to Determine