The Evidence Base
What the Research Shows
The relationship between community participation, faith engagement, and mental health is now supported by decades of longitudinal research.
The Causal Sequence
Community participation is declining across the developed world
Faith communities have historically been the primary source of regular community participation
A 30-year study across 24 US states found a causal link between declining faith participation and rising ‘deaths of despair’
Harvard longitudinal research found that women who attended faith-based services weekly were up to 84% less likely to die by suicide
What protects people is not belief alone — it is regular participation in communities providing presence, purpose, and practice
Over 370,000 faith communities in the US alone already provide this infrastructure
The gap is not in the infrastructure — it is in the coordination between community infrastructure and clinical expertise
Compassion Unites exists to close that gap
Key Research Citations
reduction in suicide risk
Women attending religious services weekly
Harvard T.H. Chan / JAMA Psychiatry, 2016
lower all-cause mortality
Across multiple cohort studies
Harvard Nurses’ Health Study
relationship established
Blue Laws studies: 30 years, 24 states
Gruber & Hungerman, 2008
The Economic Case
The Lancet Commission estimates the global mental health crisis costs over $2 trillion annually.
McKinsey reports that for every $1 invested in community-based mental health, $4 is returned in economic productivity.
The NBER finds that faith community infrastructure saves governments billions in social service costs that would otherwise fall to the state.
Frequently Asked Questions
Is the evidence for faith and mental health reliable?
The key studies cited by Compassion Unites are drawn from peer-reviewed longitudinal research, including Harvard cohort studies tracked over 16+ years and published in journals including JAMA Psychiatry.
Does this mean only religious people benefit?
The evidence shows that what protects mental health is regular participation in communities that provide presence, purpose, and practice. While faith communities are the largest existing infrastructure for this, the protective mechanism is social, not doctrinal.
How does Compassion Unites use this evidence?
CU synthesises existing research, commissions new studies where gaps exist, and translates findings into practical guidance for community leaders and cross-sector partners.