The main findings of this study are that consumption by Bangladeshi preschool children of BFR providing ∼1 mg additional zinc daily for 9 mo, compared with CR: 1) did not significantly affect PZC or the prevalence of zinc deficiency; 2) did not significantly affect FADS activity, I-FABP, or fecal calprotectin; and 3) significantly increased overall risk of infection-related morbidity, particularly of the upper respiratory tract. Here, FABP2 is linked to Zinc deficiency.