Perchlorate can be found in dairy milk in both Japan and the United States. - GreenMedInfo Summary
Perchlorate in dairy milk. Comparison of Japan versus the United States.
Environ Sci Technol. 2007 Jan 1;41(1):88-92. PMID: 17265931
Departments of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, USA.
Perchlorate has been considered a potential threat to human health, especially to developing infants and children due to its ability to inhibit iodide uptake by the sodium iodide symporter (NIS) of the thyroid. Although the U.S. has been the prime focus of perchlorate contamination, at least some of the similar sources of perchlorate exist across the world, and it has been detected in many types of foods and beverages worldwide. We present here perchlorate data from cow's milk samples from Japan (mean 9.4 +/-2.7 microg/L, n = 54), which are higher on average than those found in U.S. dairy milk samples reported by a 2004 Food and Drug Administration (FDA) study (5.9+/-1.8 microg/L, n= 104).