Peer support has moved from the margins of mental health services into formal roles within many of them. The reason is not that it is cheaper, though it often is, but that it does something a clinical relationship structurally cannot.
The relationship starts from a different position
A clinician holds assessment responsibility, which means anything a patient says may inform decisions about diagnosis, medication or risk.
A peer supporter generally holds no such authority, and the person they are working with knows it.
That difference changes what gets said, particularly about topics people learn to manage carefully in clinical settings.
Shared experience carries information that description does not
Someone who has been through a similar episode does not need the situation explained from the beginning, and often anticipates parts of it.
They can also speak about the practical texture of it: what the ward was like, how long the paperwork took, what returning to work involved.
This is knowledge that comes from having occupied the position, and it is not transferable through training alone.
Hope is demonstrated rather than asserted
A clinician saying that recovery is possible is making a professional statement based on caseloads and evidence.
A peer supporter functioning in the role is evidence of the same claim in a form that is difficult to argue with.
For people who have concluded their situation is permanent, that demonstration frequently carries more weight than any amount of reassurance.
The role requires structure to work safely
Shared experience is the resource, and it also creates the main risks: over-identification, assuming another person's path will resemble one's own, and the effect on the supporter of repeated exposure.
Services that use peer roles well provide supervision, clear boundaries about what the role covers, and defined routes for escalating concerns.
Where those structures are absent the role tends to drift, either into unsupported clinical work or into a token position with no actual function.
It complements rather than substitutes
Peer support does not diagnose, prescribe or manage acute risk, and services that treat it as a cheaper replacement for clinical capacity misuse it.
Its value lies in the parts of recovery that happen outside appointments, where practical navigation and sustained contact matter more than clinical decision-making.
Availability differs substantially between countries and between services within them, and anyone interested is usually best directed to it through the team already involved in their care.