Thyroid screening suggested for low IQ

Medical ethicists are debating whether it is acceptable to use thyroid screening to identify infants – and possible even IVF embryos - for risk of low IQ.

Australian ethics expert Professor Julian Savulescu argues this week that since thyroid deficiency has been linked to low IQ, there is an imperative to identify and treat children with thyroid supplements from an early age.

He says UK researchers recently showed that about 4% of children have two copies of a common gene (Thr92Ala) and low