Caregivers reported greater climate-related mental health burden than non-caregivers, and structural factors including housing insecurity, financial stress, sexual identity, care recipient type, rural residence, and low community cohesion were associated with elevated burden within the caregiver subgroup.
Key Findings
Results
Caregivers had significantly increased odds of climate-related mental health burden compared to non-caregivers.
Adjusted odds ratio of 1.57 (95% CI 1.36–1.80) for caregivers versus non-caregivers
Analysis used multivariable logistic regression
Data source was the 2023 California Health Interview Survey (CHIS)
Cross-sectional study design
Results
Housing insecurity was associated with higher odds of climate-related mental health burden among caregivers.
aOR = 1.43 (95% CI 1.11–1.84) for housing insecurity within the caregiver subgroup
Finding derived from subgroup analysis restricted to caregivers
Identified as a structural factor shaping mental health burden
Results
Caregiving-related financial stress was associated with elevated climate-related mental health burden among caregivers.
aOR = 1.54 (95% CI 1.19–2.01) for caregiving-related financial stress
Finding derived from subgroup analysis among caregivers
Classified as a structural determinant of mental health burden
Results
Bisexual or pansexual identity was associated with substantially higher odds of climate-related mental health burden among caregivers.
aOR = 2.96 (95% CI 2.02–4.33) for bisexual/pansexual identity within the caregiver subgroup
This was the largest odds ratio observed among the structural factors examined in the caregiver subgroup
Finding derived from subgroup logistic regression analysis
Results
Caregivers providing care to older adults had higher odds of climate-related mental health burden than other caregivers.
aOR = 1.31 (95% CI 1.03–1.65) for providing care to older adults versus other care recipient types
Finding was statistically significant at the 95% confidence level
Derived from subgroup analysis within the caregiver population
Results
Rural caregivers living in neighborhoods with low community cohesion had markedly elevated odds of climate-related mental health burden.
aOR = 2.65 (95% CI 1.46–4.81) for rural caregivers in low community cohesion neighborhoods
This represents a combined effect of rural residence and neighborhood-level social factor
Finding derived from subgroup analysis among caregivers using 2023 CHIS data
What This Means
This research suggests that people who provide unpaid care to family members or others are significantly more likely than non-caregivers to experience mental health impacts related to climate change. Using data from California's statewide health survey conducted in 2023, researchers found that caregivers were about 57% more likely to report climate-related mental health burden after accounting for other factors. This adds to growing evidence that caregivers face compounding stressors that may make them especially vulnerable to climate-related threats.
Among caregivers specifically, several structural and social factors were linked to even greater mental health burden. These included being housing insecure, experiencing financial stress tied to caregiving, identifying as bisexual or pansexual, caring for an older adult, and living in a rural area with weak neighborhood social connections. The association with bisexual or pansexual identity was particularly strong, nearly tripling the odds of climate-related mental health burden compared to caregivers without that identity. Rural caregivers in low-cohesion communities also faced more than twice the burden of others.
This research suggests that climate adaptation planning should explicitly consider the needs of caregivers, particularly those facing multiple social and economic disadvantages. The findings point to the importance of community cohesion, financial support, and stable housing as potential areas where interventions could help reduce climate-related mental health impacts for caregivers and, by extension, for the people they care for.
Choa E, Vlahov D, Sarkar S, Poghosyan H. (2026). Climate change and mental health burden among caregivers in California.. The Gerontologist. https://doi.org/10.1093/geront/gnag048