Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

Food: The growing problem

World hunger remains a major problem, but not for the reasons many suspect. Nature analyses the trends and the challenges of feeding 9 billion by 2050.

Download a PDF of this article
See online collection

1. Where the hungry people are

In 2009, more than 1 billion people went undernourished — their food intake regularly providing less than minimum energy requirements — not because there isn't enough food, but because people are too poor to buy it. At least 30% of food goes to waste. Although the highest rates of hunger are in sub-Saharan Africa — tracking closely with poverty — most of the world's undernourished people are in Asia.

boxed-text

Click for larger image

2. Hunger isn't going away

The percentage of hungry people in the developing world had been dropping for decades (bottom) even though the number of hungry worldwide barely dipped (top). But the food price crisis in 2008 reversed these decades of gains.

boxed-text

Click for larger image

3. It's not about the bomb

Scientists long feared a great population boom that would stress food production, but population growth is slowing and should plateau by 2050 as family size in almost all poorer countries falls to roughly 2.2 children per family. Even as population has risen, the overall availability of calories per person has increased, not decreased. Producing enough food in the future is possible, but doing so without drastically sapping other resources, particularly water, will be difficult.

boxed-text

Click for larger image

4. And it's not about land

An outlook published in 2009 by the Food and Agriculture Organization of the United Nations and the Organisation for Economic Co-operation and Development (http://go.nature.com/DdNYvk) says that current cropland could be more than doubled by adding 1.6 billion hectares — mostly from Latin America and Africa — without impinging on land needed for forests, protected areas or urbanization. But Britain's Royal Society has advised against substantially increasing cultivated land, arguing that this would damage ecosystems and biodiversity (http://go.nature.com/YJ2jsB). Instead, it backs 'sustainable intensification', which has become the priority of many agricultural research agencies.

boxed-text

Click for larger image

5. It's about doing more with less

Many countries can make gains in productivity just by improving the use of existing technologies and practices. But sustainable intensification also means generating greater yields using less water, fertilizer and pesticides. Increased public investment in agricultural research will be crucial to doing this, say experts. Yet this investment makes up only 5% of total research and development spending on science. Worldwide public investment in agricultural research is increasing but at a much slower rate than in the 1970s during the green revolution. One exception is China, where funding has more than doubled over the past decade.

boxed-text

Click for larger image

Graphics by Nik Spencer, data compiled by Declan Butler.

Related links

Related links

Related links in Nature Research

Food special

Related external links

OECD-FAO Agricultural Outlooks

World Summit on Food Security 2009

FAO hunger site

Global Conference for Agricultural Research for Development

Agricultural science & technology indicators

Center for International Earth Science Information Network (CIESIN) hunger and poverty site

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Food: The growing problem. Nature 466, 546–547 (2010). https://doi.org/10.1038/466546a

Download citation

Further reading

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing