The bottom line of welfare on our planet and its people is not only dependent on traditional economic measures, but also on knowledge and education and – last but not least – on human health. Human health is a critical factor for the welfare and prosperity of society. Many parameters appear to play a role in a health equation, even though the empirical measurement of health is fraught with many conceptual and empirical problems. As a consequence, we observe many disparities in empirical health conditions in a heterogeneous society; an appropriate definition and measurement of 'good health' are far from easy. Next to health disparities caused by a heterogeneity among the population, there is also an important geographical component in the sp...