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Double-Fortified Salt

Adding a trace of iron to iodized salt — one of the most cost-effective ways to curb the world's most widespread form of malnutrition, now reaching an estimated 50+ million people.

Community members at a double-fortified salt programme
people affected by iron deficiency
2 billionpeople affected by iron deficiency
people reached by DFS
50M+people reached by DFS
meals fortified a year
10B+meals fortified a year
per person, per year
<$0.25per person, per year

The Grand Challenge

Iron deficiency afflicts roughly 2 billion people globally, disproportionately women and children. That includes the majority of children in Africa, the majority of children and women under 50 in India, and 35% of women of reproductive age in the United States.

Its consequences reach well beyond tiredness. Iron deficiency reduces energy and cognition, increases maternal mortality, and reduces GDP by around 4% in many low- and middle-income countries.

Affects
Roughly 2 billion people worldwide
Highest burden
Women and children
Economic cost
Around 4% of GDP in many low- and middle-income countries

Why Salt?

Any fortification programme is only as good as its delivery vehicle. Salt is the best one we have.

Ranked first on cost effectiveness

Elite economists ranked micronutrients first among ways to help humanity when measured against their cost.

A universal vehicle

Salt is consumed in all cultures and geographies, in regular small daily quantities, and is centrally processed — even in low- and middle-income countries.

Already in billions of kitchens

Iodized salt is consumed by around 6 billion people daily: several-fold more than any other fortified food.

How It Works

From a single manufactured granule to salt already moving through national distribution.

01

The granule

DFS is made with an iron-containing granule that looks like a grain of salt. Our encapsulated ferrous fumarate (EFF) formulation preserves nutrient stability, bioavailability and consumer acceptability.

02

The blend

The granule is manufactured in India, then mixed with iodized salt at a 1:150 ratio at existing salt processing plants — no new production lines required.

03

The dose

Nutrient concentration can be dialled up as sodium intake decreases. EFF has more than 5× the bioavailability of ferrous sulfate, and the incremental cost is under USD 0.25 per person per year.

Adoption at Scale

The programme has moved well past the pilot stage — governments and companies now run it themselves.

Massive scale

Distribution to an estimated 50+ million people and 10+ billion meals per year, mostly through safety nets in India.

Government adoption

Multiple state safety nets in India — PDS, MDM and ICDS — now wholly fund mass DFS purchase and distribution.

Self-perpetuating momentum

State governments are launching and funding DFS programmes on their own, without external prompting.

Commercial channels

National brand ITC/Aashirvad is piloting DFS using our EFF formulation, and other companies sell DFS on a market basis.

Global interest

A conglomerate in Peru and the government of Indonesia have reached out, alongside interest in Kenya (AMREF, Kisumu province) and from the African Union. Commercial rollout is ongoing in Argentina.

Market share

EFF DFS holds an estimated 90%+ share of the DFS market in India.

Evidence & Impact

The results are measured, peer-reviewed, and hold up at population scale.

  • A peer-reviewed effectiveness study in Uttar Pradesh found a 15% lower risk of iron deficiency in intervention areas (RR = 0.85; 95% CI 0.75–0.98).
  • Women who reported regular use of DFS had a 23% lower risk of iron deficiency (RR = 0.77; 95% CI 0.66–0.93); those reporting partial use had a 20% lower risk.
  • Published studies by ETH Zurich and Cornell show efficacy in reducing iron deficiency, and improvements in cognition.

Who's Behind It

The work is carried out through the Fortified Salt Consortium, which includes the University of Toronto, the Open Source Pharma Foundation, and JVS Foods / Wella Nutrologicals (Jaipur), among others.

Two of the technology leads, Venkatesh Mannar and Levente Diosady, are Officers of the Order of Canada.

Meet the team

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