Everyday chemicals affect brain, IQ — study
By Barbara Demeneix, Muséum national d’histoire naturelle (MNHN) – Sorbonne Universités May, 2017 All vertebrates – from frogs and birds to human beings – require the same thyroid hormone to thrive. Every stage of brain development is modulated by thyroid hormone and, over millions of years, the structure of this critical hormone has remained unchanged. But, increasingly, the trappings of modern life are preventing it from playing its critical role in human brain development. Thyroid hormone signalling is very vulnerable to interference by chemicals that can scramble the endocrine communication routes between cells. These endocrine disruptors, as they are called, include