Food Fortification Fills 7B Gaps, Potential to Triple

New study finds food fortification is a cost-effective way to address micronutrient deficiencies globally.

Mar. 27, 2026 at 5:31am

Got story updates? Submit your updates here. ›

A new study in The Lancet Global Health provides the first comprehensive global analysis of the impact of current food fortification programs. Researchers found that large-scale food fortification programs currently prevent around 7 billion cases of micronutrient inadequacies worldwide each year at a cost of just 18 cents per person. The study also identified ways to expand these programs to prevent billions more inadequacies at low additional costs.

Why it matters

Micronutrient inadequacies affect billions globally and are linked to poor health, low immunity, increased risk to diseases and poor cognitive development. Food fortification is one of the most cost-effective public health interventions available, but there is still untapped potential to reach more people and address more nutrient gaps.

The details

The researchers modeled the impact of fortification across 185 countries, covering 99.3% of the global population. They found that existing programs prevent 7 billion people from receiving inadequate micronutrients every year at a global cost of $1.06 billion. Iodine fortification of salt accounts for nearly half of all benefits, followed by iron fortification of flour. The study identified three priority actions that could dramatically expand impact: improving compliance with existing standards, aligning national standards with WHO guidelines, and expanding programs to high-need countries.

  • The study was published on March 27, 2026.

The players

Christopher Free

A research professor at UC Santa Barbara and co-lead author of the study.

Florencia Vasta

The lead of large-scale food fortification at the Global Alliance for Improved Nutrition (GAIN) and a co-author of the study.

Valerie Friesen

A senior technical specialist at GAIN and co-lead author of the study.

Global Alliance for Improved Nutrition (GAIN)

An international organization that collaborated on the study.

University of California

One of the institutions that collaborated on the study.

Got photos? Submit your photos here. ›

What they’re saying

“Our study shows that large-scale food fortification is a cost-effective intervention for preventing inadequate micronutrient intakes. And expanding food fortification to include more countries and foods could prevent billions more at low additional costs.”

— Christopher Free, Research professor at UC Santa Barbara

“Salt iodization alone prevents 3.3 billion iodine inadequacies each year — reducing global iodine inadequacy by 89%. But we're also leaving major gains on the table. With targeted improvements, we could reach billions more people.”

— Florencia Vasta, Lead of large-scale food fortification at GAIN

“Although many countries require food processors to fortify staple foods, compliance is often low. Improving compliance with current laws could prevent 6.1 billion more inadequacies at an additional cost of only $0.05 a person annually.”

— Christopher Free, Research professor at UC Santa Barbara

What’s next

The researchers plan to continue studying ways to further expand and optimize food fortification programs globally to address more micronutrient gaps.

The takeaway

Food fortification is a highly cost-effective public health intervention that has already prevented billions of cases of micronutrient deficiencies worldwide. With targeted improvements to expand coverage and compliance, these programs have the potential to reach billions more people and dramatically improve global nutrition and health.