Survey data across many countries shows religious affiliation declining while identification with spirituality has held up or grown. Understanding what that means requires unpicking a word doing a great deal of work.
The definitional problem
Researchers studying this have struggled to define the term consistently, which limits what the research can establish.
Definitions in use include a sense of connection to something larger, a search for meaning, a set of practices, an experience of transcendence, and a general orientation toward non-material values.
These are not the same thing, and studies measuring different definitions produce different results.
Which is a genuine limitation and it is worth stating before any findings.
The measurement critique
A specific methodological problem that has been raised repeatedly.
Several widely used spirituality scales include items about wellbeing — feeling peaceful, having purpose, being content.
Which means a study finding that spirituality correlates with wellbeing may be finding that wellbeing correlates with wellbeing.
Studies using measures that exclude such items find weaker relationships, which suggests the contamination is real.
What does appear to hold
Religious attendance — the behavioural measure rather than the belief measure — has reasonably consistent associations with health outcomes and mortality in large observational studies.
The proposed mechanisms are largely mundane: social support, behavioural norms including lower substance use, structured routine, and a community that notices absence.
Which suggests the effect is substantially social rather than metaphysical, and that is an interesting finding in itself.
Private belief without community shows weaker associations, consistent with that interpretation.
Meaning
Sense of purpose has been studied as a distinct variable and has its own literature.
Associations with mortality, cognitive decline and cardiovascular outcomes have been reported in several large cohorts.
Confounding is the obvious concern, since people with a strong sense of purpose differ in many ways, and the studies adjust for what they can.
The finding has been consistent enough that it is taken seriously in ageing research.
The spiritual but not religious category
Research on this group finds considerable heterogeneity, which is unsurprising given the definition.
Some studies find outcomes similar to religious participants, others closer to the non-religious, and the variation appears to track whether there is a community and a practice or only a self-description.
Which again points toward the behavioural and social components rather than the belief.
The commercial layer
Worth noting because it is now substantial.
Practices, objects and services marketed under spiritual framing constitute a large industry with essentially no regulation of claims.
Which means the same terminology covers established contemplative traditions, therapeutic practices, and products with no basis of any kind.
Distinguishing them requires asking what specific claim is being made and what supports it, which is the same question that applies anywhere else.
Where harm occurs
The clearest case is where spiritual framing displaces medical treatment for a treatable condition.
The second is high-demand groups, where the vocabulary of transformation is used to justify financial exploitation or control, and there is a substantial literature on the recruitment patterns involved.
Practices that discourage questioning, isolate people from prior relationships, or attach large financial commitments to progression are the recognised warning signs.
Where I land
The components with the best evidence — community, practice, purpose, ritual — are available in many forms and are not dependent on any particular belief.
Which means the useful question is not whether the metaphysics is true but whether the arrangement provides those things.
That is a considerably more tractable question and it is one people can answer for themselves.
Ritual
A component that has been studied on its own and has more support than the surrounding concepts.
Experimental work has found that performing a ritual before a stressful task reduces anxiety and improves performance, even when the ritual is arbitrary and participants know it is.
The proposed mechanism is a restored sense of control rather than any belief about efficacy.
Which suggests that the structure and repetition are doing the work, and it explains why rituals appear in every culture and in secular contexts.
Awe
A specific emotional state that has attracted research attention.
It is generally operationalised as a response to something vast that requires adjusting one's mental frameworks.
Studies have associated it with reduced self-focus, altered time perception and increased prosocial behaviour, with effects that are modest and reasonably replicated.
It is reliably produced by natural settings, music, and certain kinds of scale, none of which require any particular belief.
Which makes it one of the more tractable components of what people describe when they use the word spiritual.
Practice without belief
An increasingly common position worth naming.
People participating in contemplative or communal practices while holding no corresponding metaphysical belief are now a substantial group in survey data.
Which some traditions accommodate readily and others do not, and the tension is a live question within several of them.
From a research perspective it is a useful natural experiment, since it separates the practice and community components from the belief component.