"Shockingly high levels of iodine deficiency found in Welsh schoolchildren risk causing mental impairment in future generations," Wales Online reported January 5th. The news report summarized a study published in the Institute of Welsh Affairs' journal, Agenda, by ICCIDD regional coordinator Professor John Lazarus.

"Iodised salt is the preferred method of iodisation in many countries and has been shown to be cost effective and a major public health success.

"But there has never been any legislation in the UK requiring the use of iodised salt. As a consequence, this type of salt is not available in most supermarkets and only around 5% of salt contains iodine.

"Prof Lazarus added: 'While many countries in the EU have enacted a salt law requiring the addition of certain concentrations of iodine to salt, not all these laws are being adhered to. There could be a need for general legislation across the EU.

“'But it would be better if pressure came from below. It is important, therefore, that if it wishes to take the lead in public health matters, Wales plays its part in putting this issue onto the wider public health agenda. For the sake of future generations it is not something we should allow to be kicked into the long grass.'

"A Welsh Government spokeswoman said: 'We are committed to improving the health and well being of the people of Wales and to reducing health inequalities.'"