Mutual Capacity Building to Reduce the Behavioral Health Treatment Gap Globally.

Use of lay health workers for the treatment of common mental disorders is an expanding, yet still underutilized, opportunity for closing the behavioral health treatment gap globally. In this commentary, we describe how "mutual capacity building," an equal exchange of ideas between low and middle-income countries (LMICs) and high-income countries (HICs) to promote shared learning, could promote the development and scale-up of therapies using lay health workers. We propose ways that task sharing models for behavioral health can inform and be supported by bidirectional learning across HICs and LMICs.