Christensen AV, Juel K, Ekholm O, et al. - Researchers focused on the link of living alone and loneliness with patient-reported outcomes at hospital discharge as well as their predictive ability for cardiac events and mortality 1 year post-hospital discharge in women and men with ischaemic heart disease, arrhythmia, heart failure or heart valve disease. For this purpose, they performed a national cross-sectional survey in patients with established cardiac disease at hospital discharge, linked to national register data at baseline and 1-year follow-up. The survey was completed by 13,443 patients (53%) with ischaemic heart disease, arrhythmia, heart failure or heart valve disease. Males were 70%, and mean age in women and men was 66.1 and 64.9, respectively. In both men and women, findings revealed a strong link between loneliness and poor patient-reported outcomes and 1-year mortality across cardiac diagnoses. Public health initiatives should focus on loneliness as a priority. Inclusion of loneliness in clinical risk evaluation in cardiac patients was recommended.