An increasing number of developing countries must shoulder a "double burden" of malnutrition, the persistence of undernutrition, especially among children, along with a rapid rise of overnutrition and diseases such as diabetes, hypertension and coronary heart disease. The growing burden of non-communicable diseases is associated with a substantial rise in public health and social expenditures. Given current economic and social trends, observed changes in dietary patterns are likely to continue and - combined with changes in lifestyle, particularly the decrease in physical activity - will exacerbate emerging problems of overnutrition and diet-related chronic disease. Our focus is to spread and share knowledge about this alarming development. Therefore we are conducting summer schools all over the world concentrating on the relationship between micronutrient deficiencies and non-communicable diseases in developing countries.