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State of World Population 2012 - Country Page List - UNFPA

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empirical evidence supporting this theory has<br />

so far proved to be elusive, largely because <strong>of</strong> the<br />

long time lags between the times that these outcomes<br />

are observed.<br />

Further evidence in support <strong>of</strong> the relationship<br />

between mother’s health, a child’s health and his<br />

or her participation in the labour force comes<br />

from the studies <strong>of</strong> maternal nutrition. These<br />

studies demonstrate that declines in fertility and<br />

improvements in maternal health are associated<br />

with not only improved child health, improved<br />

cognitive test scores and schooling attainment<br />

but also improved occupational status and earnings,<br />

reduced non-participation in the labour<br />

force, reduced chronic disease and disability<br />

before the age <strong>of</strong> 50, and more notably thereafter<br />

(Miguel and Kremer, 2004; Almond 2006;<br />

Almond, Edlund, et al., 2007; Almond and<br />

Mazumder, 2008; Almond and Currie, 2011).<br />

One recent study used data on monozygotic<br />

twins to estimate the effect <strong>of</strong> intrauterine<br />

nutrient intake on adult health and earnings<br />

found that health conditions play a major<br />

role in determining the world distribution <strong>of</strong><br />

income (Behrman and Rosenzweig, 2004).<br />

The study showed considerable variation in the<br />

incidence <strong>of</strong> low birth weight across countries,<br />

and that there are real pay<strong>of</strong>fs to increasing<br />

body weight at birth. Increasing birth weight<br />

increases adult schooling attainment and adult<br />

height for babies at most levels <strong>of</strong> birth weight.<br />

They also find evidence that augmenting birth<br />

weight among lower-birth weight babies, but<br />

not among higher-birth weight babies, has<br />

significant labour market pay<strong>of</strong>fs.<br />

Reproductive health and the wealth and<br />

well-being <strong>of</strong> households<br />

There are several routes through which fertility<br />

decline and improved health may be translated<br />

into better household social and economic<br />

well-being (Bloom and Canning, 2000;<br />

Birdsall, Kelley and Sinding, 2001; Schultz,<br />

2008; Sinding, 2009). First, as documented<br />

earlier, healthier people work more and are<br />

physically and cognitively stronger, and, thus<br />

more productive and earn higher incomes<br />

and accumulate more assets. Second, healthier<br />

people enjoy a longer life expectancy, and thus<br />

have greater opportunities to invest in, and<br />

reap returns from, their schooling and human<br />

capital more broadly. This positive relationship<br />

between health and wealth is further reinforced<br />

by low fertility and the quantity-quality<br />

t<br />

Mobile health clinic in<br />

Sri Lanka.<br />

©<strong>UNFPA</strong>/FPASL<br />

THE STATE OF WORLD POPULATION <strong>2012</strong><br />

79

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