“…However, most longitudinal community-based studies have not found a specific relationship between vascular risk factors or vascular disease and minor or major depression in the elderly (Lyness et al, 1997;Cervilla et al, 2004;Vinkers et al, 2005;Versluis et al, 2006), or this relation was confounded by functional disability (Lyness et al, 2000). Because of these inconsistent results (Kales et al, 2005), we hypothesized that vascular disease in old age might lead to apathy instead of depression assuming that vascular disease predisposes, precipitates, or perpetuates apathy in old age.…”