According to the World Food Programme (WFP), 2015:

Some 795 million people in the world do not have enough food to lead a healthy active life. That’s about one in nine people on earth.

The vast majority of the world’s hungry people live in developing countries, where 12.9 percent of the population is undernourished.

Poor nutrition causes nearly half (45%) of deaths in children under five – 3.1 million children each year.