On the occasion of World Food Day, the Zero Hidden Hunger EU project introduces a new policy lab initiative to spark dialogue on micronutrient deficiencies. The project aims to estimate the prevalence of these deficiencies in the EU and their associated health costs.The policy lab is led by the European Public Health Alliance (EPHA) and aims to bring together European policymakers in Brussels, Belgium, to discuss solutions to address micronutrient deficiencies across Europe. Nutrition Insight speaks to experts working on the Zero Hidden Hunger EU project and an EPHA representative about their work and goals.