Iodine nutrition, thyroid function, and thyroid autoimmunity four decades after Universal Salt Iodisation in India: a cross-sectional study among schoolchildren (ICMR-SALT-T 1)

Background

Epidemiological studies undertaken following the first and second decade after the introduction of Universal salt iodisation (USI) in 1986 had pointed towards mild persistence in goitre, iodine excess as measured by spot urinary iodine concentration (UIC) and increase in thyroid autoimmunity. We aim to look at the status of iodine nutrition, goitre prevalence, thyroid dysfunction, and autoimmunity in Indian school-children in the fourth decade of implementation of USI.