“…While LE estimates provide information on the general status of the population, subjective life expectancy (sLE) has been studied as a proxy to gain insight into individual variances of LE [ 13 ]. The determinants of sLE include the longevity and health of forebears [ 14 – 18 ], health status [ 16 , 18 – 20 ], age [ 16 , 18 , 19 ], gender [ 16 , 18 , 21 – 23 ], lifestyle-related risks [ 18 , 24 – 26 ], socio-economic status [ 21 , 27 ] as well as a number of psychosocial and psychological factors, such as happiness, optimism, social relationships, depression or the sense of control [ 18 , 20 , 28 – 31 ]. sLE has proven to be a predictor of actual life-expectancy and mortality [ 19 , 32 , 33 ], a determinant of decisions about retirement [ 34 , 35 ], consumption and savings [ 36 ] as well as health behaviours [ 37 , 38 ].…”