Strife is getting more common in lower-middle income countries, and weak government is at least as big a predictor of violence as poverty itself.
Now, he said, G8 members in turn had to carry out their decisions, especially last year's agreement to extend debt relief to middle income countries.
"Almost three-quarters of the deaths caused by sugary drinks are in low and middle income countries, " says study author Dr. Dariush Mozaffarian, co-director of the cardiovascular epidemiology program at the Harvard School of Public Health.
But many think that middle-income countries in the Middle East and Asia could afford to pay more.
They discussed a range of issues, including the challenges of globalization, the role of UNESCO, especially in middle-income countries, and the situation in the Middle East.
Of the world's undersized children (a good indicator of malnutrition), 70% live in middle-income countries.
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Of 101 middle-income countries in 1960, only 13 had become high-income by 2008, according to the report.
But to win the battle against NCDs in many low- and middle-income countries, we need more than medicines.
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In low- and middle-income countries, more than 8 million people living with HIV are now receiving antiretroviral therapy.
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Then you would lose the Bank's benefits for middle-income countries and also have less money for the poorest.
On average, in middle-income countries about 60% of rural people live within two kilometers of an all-season road.
Most, perhaps all, poor and middle-income countries face chronic shortages of skilled workers.
And worries persist about the weakening market for the banks loans to creditworthy middle-income countries, which help to finance development.
Some middle-income countries, such as Morocco, Mexico, Turkey and Libya, are well-trodden transit routes with migrant populations of their own.
In other middle-income countries, such as those of Latin America, the public sector systematically overpays the majority of its workers.
At the moment, 8m people in poor and middle-income countries take them and the aim is to increase that to 15m.
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In fact, the programmes helped make poor and middle-income countries more resilient.
In middle-income countries, the key tasks are increasing productivity and economic growth.
The study authors note that the majority of people flying out of Guinea, Liberia and Sierra Leone are traveling to other low- or middle-income countries.
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But even excluding China and India, the share of global poverty accounted for by other middle-income countries tripled between 1990 and 2008, to 22%.
ECONOMIST: Awkward questions about how best to help the poor
And it says about eight million people in low and middle-income countries are getting the treatment they need, up from just 0.4 million in 2003.
However, we must do much more to ensure that the over 5 million people needing antiretroviral therapy in low- and middle-income countries gain access to it.
Shadow international development secretary Ivan Lewis said it was important to maintain financial help to "middle income" countries like South Africa, which he described as "strategically" very important.
However, low- and middle-income countries were devastated by the pandemic.
Though we think of NCDs as diseases of more affluent societies, some 80 percent of all NCDs today occur in low- and middle-income countries, due largely to changing lifestyles.
FORBES: To Reduce Global Poverty, We Must Tackle Non-Communicable Diseases
He agrees with Messrs Kharas and Rogerson that, as middle-income countries take more people out of poverty, the proportion of poor people who live in poor countries must rise.
Not surprisingly, 84 percent of deaths due to eating too much sodium occurred in low and middle-income countries where access to fresher, less preserved foods is more difficult and prohibitively expensive.
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In low- and middle-income countries, where public resources are especially tight, regulatory constraints have made it difficult to quickly and efficiently test, approve, and ensure the quality of medicines that people need.
FORBES: To Reduce Global Poverty, We Must Tackle Non-Communicable Diseases
Throughout the Middle East, the public sector's share of the economy is among the highest in the world, at 32% of GDP, compared with 20% of GDP for other low- and middle-income countries.
Almost half of all pregnant women living with HIV in low- and middle-income countries received antiretrovirals to prevent mother-to-child transmission, and more children living with HIV are benefiting from treatment and care programmes than ever before.
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