“…The existence of an income-health gradient is well established in the health economics literature, with the common finding that a higher income is linked to better health in Europe, the US, and elsewhere in the developed world (Adda et al, 2009;Adeline and Delattre, 2017;Apouey and Clark, 2014;Benzeval and Judge, 2001;Benzeval et al, 2000;Carrieri and Jones, 2017;Deaton and Paxson, 1998;Davillas et al, 2017b;Ettner, 1996;Frijters et al, 2005;Jones and Wildman, 2008;Lindahl, 2005). The underlying logic is that more income provides more avenues to better health, including better nutrition, improved access to health care, more opportunities for physical activity, more public safety, and lower environmental risk (Evans et al, 2012).…”