Kevin was a participant in a clinical study to determine how much niacin cures pellagra, the niacin deficiency disease. During the study, he consumed only a formula diet that was deficient in niacin. After developing pellagra, he was given 2 mg of niacin a day for 2 weeks, but he still suffered from the disease, so the scientists added 2 mg of the vitamin to Kevin's formula. By the beginning of the 5th week of the study, the researchers noticed that Kevin's signs and symptoms were greatly improved. At the end of the 5th week, he was feeling fine. The researchers concluded that

Question

Quizplus · Accepted Answer

The researchers concluded that Kevin's niacin requirement was about 4 mg a day based on the fact that he did not improve until his niacin intake was increased to a total of 4 mg a day. This suggests that his body required that amount to maintain health and prevent pellagra. The other answer choices are not supported by the information given in the scenario.

Kevin Was a Participant in a Clinical Study to Determine