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Figure 1: Subjects were randomly assigned to one of the two study arms, distinguished by the order of the placebo and micronutrient tests. Subjects later crossed into the other arm of the study and participated in the opposite test condition. Treatment condition was masked; neither the participants nor the study team knew which treatment was delivered in each arm

Figure 1: Subjects were randomly assigned to one of the two study arms, distinguished by the order of the placebo and micronutrient tests. Subjects later crossed into the other arm of the study and participated in the opposite test condition. Treatment condition was masked; neither the participants nor the study team knew which treatment was delivered in each arm