The Irish Times:
Does Ireland need a dedicated minister for loneliness?
18 January 2018
He told The Irish Times that the impact of loneliness on physical health was “equivalent to 15 cigarettes a day and a study by the London School of Economics found that it cost the UK state an average of £6,000 per person per year”.
Related publications
The Depression Report: A New Deal for Depression and Anxiety Disorders, A report by the Centre for Economic Performance's Mental Health Policy Group, 18 June 2006
http://cep.lse.ac.uk/pubs/download/special/depressionreport.pdf