PANOECONOMICUS, vol.70, no.2, pp.303-319, 2023 (SSCI)
The World Happiness Report 2018 ranks 156 countries by their happiness
levels, and revealed a link between happiness and obesity. Despite the importance of this
link, few studies have analyzed this relationship. Moreover, it may be the case that the
relationship between happiness and obesity is non-linear. The relationship between
happiness and income, however, has been studied by several researchers, particularly after
the publication of Easterlin (1974). In his famous paradox, Easterlin found that after
reaching a certain level, the further increase of material wealth no longer promotes
happiness. Here, we investigate whether there is a quadratic relationship between happiness
& obesity and happiness & income, for a panel of EU countries for the period 2005-2016,
using the system GMM method. The empirical results suggest an inverse U-shaped
relationship between happiness & obesity and happiness & income, implying that as obesity
(income), represented by body mass index, increases, happiness first increases then
stabilizes and finally decreases. Hence, the existence of an inverted U-shaped relationship
between happiness and income supports the validity of the Kuznets curve hypothesis. Some
control variables were also included in the regressions in order to solve omitted variable
bias problems. The results indicate that income inequality and unemployment have a
significantly negative impact on happiness