Research indicates that hunger arises from lack of income, not from the physical absence of food. This is true even in case of famine, the most dramatic and gruesome expression of hunger. By far more people are malnourished or undernourished than are affected by outright famine. Even if one substantially reduces World Bank (2007) estimates, that 50 per cent of Africans are malnourished and 25 per cent seriously so, one still has tens of millions of malnourished people.