Chile's food warning labels linked to lower childhood obesity risk
New data on Chile’s pioneering food-labeling law suggest it is working. A study published in The Lancet, reported by STAT News , analyzed more than 300,000 children and found that the black octagonal warning labels — required since 2016 on products high in sugar, salt, calories, or saturated fat — were associated with a 2.9% lower risk of overweight or obesity among girls aged 4 to 6 and a 2.4% lower risk among boys, within 18 months of the rollout.
The effect sizes are modest, but the baseline is severe: roughly a quarter of Chilean children are classified as obese and more than half as overweight, and researchers note that even small reductions can carry meaningful long-term benefits. Because Chile tightened its labeling thresholds in 2018 and 2019, the authors expect later cohorts to show larger effects. For other governments weighing front-of-package warnings, this is among the strongest population-scale evidence to date that the policy changes what families buy.