“…The present study of all Finnish persons aged over 40 years examined the associations of living alone with (A) cancer incidence, (B) cancer-specific mortality and (C) all-cause mortality after cancer diagnosis of the eight most common cancers: prostate cancer, breast cancer, lung and tracheal cancer, cancer of the corpus uteri, colorectal cancer, bladder cancer, squamous cell skin cancer and skin melanoma. Because low socioeconomic position has been associated with both small social networks ( Algren et al, 2020 ) and higher cancer incidence and case-fatality risk ( Auvinen, Karjalainen, & Pukkala, 1995 ; Coughlin, 2019 , 2020 ; Fleisch Marcus et al, 2017 ; Pokhrel et al, 2010 ; Raedkjaer et al, 2020 ), we considered the effects of low education and income in our analyses. We included these common cancers because of their importance for health burden for individuals and for the society as a whole, although some of them are sex specific or common only in men or in women.…”