It is coming up to that time of year again.
From fireworks to iodine and IQ: the perchlorate connection
December 2, 2017 8.11am GMT
A less-known fact is that fireworks contain significant amounts of perchlorate, a chemical of particular concern because of its potential effects on foetal brain development. A 2014 study published in Journal of Clinical Endocrinology & Metabolism examined data from more than 21,000 pregnant women in the United Kingdom and Italy. All of tested positive for perchlorate, and many also had low iodine levels. Children born to women with the highest levels of perchlorate and the lowest levels of iodine were found to be at greater risk of significant IQ loss. So what’s the connection between perchlorate, iodine and IQ?