The current recommendation for dietary iodine intake for 0-6 month (mo) old infants of 110 µg/day is only an adequate intake (AI), in the absence of an EAR. This AI is based on the iodine intake in breast fed infants from breast milk iodine concentration (BMIC) measured in U.S. women during a period when overall iodine intakes in the U.S. population were excessive. The AI sharply disagrees with the current WHO recommendation for assessment of infant iodine nutrition based on excretion of iodine in the urine. The discrepancy makes assessment and monitoring of iodine status at this age problematic and has led to major confusion on how to interpret adequate iodine intake and optimal iodine status.