Depressive disorder is ranked as the largest contributor to non-fatal health burden. However, with prompt treatment, outcomes can improve. Family and friends are well placed to recognise the signs of depression and encourage early help seeking. Guidelines about how members of the public can provide mental health first aid to someone who is experiencing depression were developed in 2008. | Offering mental health first aid to a person with depression: A Delphi study to redevelop the guidelines published in 2008