Loneliness linked to heart disease, strokes and infections The TimesFriends, family may protect against heart attack, stroke and type 2 diabetes, study suggests Fox NewsLoneliness linked to ill health through effect on protein levels, research suggests The GuardianPlasma proteomic signatures of social isolation and loneliness associated with morbidity and mortality Nature.comLoneliness linked to higher risk of heart disease, stroke and susceptibility to infection Medical Xpress