Question to the Department of Health and Social Care:

To ask His Majesty's Government what action they have taken since the publication of National Diet and Nutrition Survey 2019 to 2023: report on 11 June, in particular in regard to the finding that females of reproductive age in the UK have less than the World Health Organization thresholds for adequate iodine concentration.

The latest National Diet and Nutrition Survey showed that iodine levels in urine in women of reproductive age, 16 to 49 years old, were below the World Health Organisation threshold for adequacy, indicating insufficient iodine intake. Similar findings were seen in men aged 19 to 64 years old and girls aged 11 to 18 years old.

The Scientific Advisory Committee on Nutrition (SACN) maintains a watching brief on emerging evidence on iodine and health, including the iodine status of women of reproductive age in the United Kingdom. The SACN considered the topic of iodine at its horizon scans in 2022 and 2024 and agreed to add this topic to its work programme, with work on iodine due to start in 2026.

Government advice remains that individuals should be able to obtain all the iodine they need from a balanced diet, as depicted in The Eatwell Guide.