Pakistan’s Stunting Crisis: A Question of Scale, and a Question of Geography

One in three Pakistani children under five is stunted. We’ve repeated that stat for thirty years — but two questions get skipped every time: what’s the right ruler to measure it with, and which children are we actually talking about.

The measurement question first. In 2013, economist Arvind Panagariya argued WHO’s 2006 growth standards overstate stunting in Indian children — built on a reference population that doesn’t account for South Asians being genetically shorter on average. The pushback was sharp: WHO standards are normative, not ethnic — they reflect what children can achieve under optimal conditions, not what a population’s genes cap out at. Adjusting for parental height, critics argued, risks recasting generations of poverty as biology.

The evidence cuts both ways. Studies of affluent Indian children raised on WHO standards found stunting of just 11–14% — suggesting well-nourished
South Asian kids do meet WHO thresholds. But Dutch research on South Asian diaspora infants found WHO standards do misclassify a meaningful share, specifically in the first six months of life — a narrower, more credible version of the critique.

Pakistan sits on the same fork. Using PDHS microdata (1990-91 vs. 2017-18), 2018 stunting is 31.5% under the older NCHS/1978 reference, or 37.3% under WHO 2006 — a 6-point swing depending purely on which standard you apply.

But the more urgent story is geographic, not statistical. However you resolve the benchmark question, provincial trajectories over the same 27 years diverged enormously:

→ KPK: 60.0% → 35.3% (−25pp) — the sharpest turnaround, driven by girls’ schooling and community health investment

→ Balochistan: 70.8% → 44.8% (−26pp) — the biggest raw improvement, yet still nearly half of all children

→ Punjab: 43.9% → 23.3% (−21pp) — steady, education-linked progress

→ Sindh: 55.3% → 43.2% (−12pp) — the weakest improvement despite comparatively better infrastructure and donor reach

So how did the national number fall at all? Mostly through the health system, not the structural drivers that make progress durable. Immunization, facility births, and antenatal care coverage expanded nationally — and that alone explains most of the 18pp national decline. What didn’t move nearly as much: mother’s education (still a 29pp stunting gap between no-education and higher-educated mothers in 2018), wealth (Pakistan’s richest quintile still has 17.2% stunting — several times higher than in peer countries), and family planning (contraceptive prevalence sits at 33%, lowest in South Asia after Afghanistan — and children of 6th-or-later birth order are stunted at 40.8%, versus 27.6% for firstborns).