Ireland faces a significant childhood obesity crisis, with one in five children overweight or obese – double the worldwide rate – as new UNICEF data reveals obesity has overtaken underweight as the dominant form of child malnutrition globally for the first time.

The landmark report “Feeding Profit: How Food Environments are Failing Children” shows that one in ten children worldwide now live with obesity, representing a dramatic shift from traditional malnutrition patterns. In Ireland’s DEIS schools, serving disadvantaged communities, the rate climbs to one in four children.
UNICEF’s analysis of data from over 190 countries demonstrates that obesity rates among children aged 5-19 have tripled since 2000, rising from 3% to 9.4%, while underweight prevalence has declined from nearly 13% to 9.2%. Sub-Saharan Africa and South Asia remain the only regions where underweight still exceeds obesity.
The report identifies 188 million school-aged children and adolescents as obese, attributing this to failing food environments where ultra-processed foods and high-sugar options are more accessible than nutritious alternatives. Children from lower socio-economic backgrounds face the greatest exposure to unhealthy food environments.
Aibhlín O’Leary, Head of Advocacy at UNICEF Ireland, emphasized the systemic nature of the crisis: “This reflects a growing global inequality – and Ireland is not immune. Children in low-income families and communities are the most exposed to unhealthy food environments and the most at risk of long-term health consequences.”
O’Leary stressed this represents “a systemic failure” rather than personal responsibility, calling for stronger policies to ensure all children access nutritious food regardless of family income.
The health implications are severe, with childhood obesity increasing risks of insulin resistance, high blood pressure, and life-threatening conditions including type-2 diabetes, cardiovascular disease, and certain cancers later in life.
UNICEF Executive Director Catherine Russell highlighted nutrition’s critical role in children’s physical growth, cognitive development, and mental health. The report identifies advertising for unhealthy foods as a key driver of rising obesity rates.
UNICEF has called for governments to ban ultra-processed foods in schools and strengthen social protection programs to improve vulnerable families’ access to nutritious diets, while welcoming Ireland’s media regulator including unhealthy food marketing restrictions in its work plan.