A new peer-reviewed study, conducted by researchers at Chulalongkorn University, Phramongkutklao Hospital and Prince of Songkla University, investigated how repeated exposure to floods, droughts, and storms impacted the well-being of agricultural workers.
The research surveyed 346 farmers across the provinces of Chumphon and Surat Thani, and the results suggested that climate change was no longer just an environmental or economic threat, but a burgeoning public health emergency.
The findings come at a time when the agricultural sector is grappling with supply chain instability. As climate hazards intensify, the human element of the production chain — the farmers themselves — is showing signs of extreme strain. The study highlighted that depression was significantly more prevalent in high-exposure areas, affecting 49.7% of farmers compared to 36% in lower-risk zones.
Flooding — the dominant psychological stressor
While the study examined multiple hazards, it identified flooding as the most damaging factor for mental stability. Farmers who reported an increased frequency of floods in the past year faced dramatically higher risks across all measured mental health categories. Specifically, these individuals were six times more likely to experience depression and nearly 10 times more likely to suffer from high stress levels.
The researchers noted that unlike storms, which are often “acute and transient”, floods and droughts represented chronic stressors. These events could fundamentally undermine the viability of a farm by causing total crop failure or preventing planting entirely. This prolonged uncertainty has created a “slow violence” that has eroded the psychological resilience of workers who depend entirely on natural cycles for their livelihoods.
Interestingly, the data showed that increased storm frequency was actually associated with lower odds of depression. The authors suggested this counterintuitive finding might be because storms are seen as manageable, one-off events, whereas the persistent threat of rising water or parched land creates a constant state of hyperarousal and emotional exhaustion.
The gap in institutional support systems
A critical finding of the report is the disparity in how different communities access support. Farmers in low-exposure areas reported significantly higher engagement with institutional help, such as community resource management, government financial compensation, and the adoption of drought-resistant seeds. In contrast, those in high-risk areas were often left to rely on self-directed, individual coping strategies.
“Adaptation in areas with high climate hazard exposure has remained largely individual and self-reliant,” the study noted. Farmers in these zones frequently turned to increased fertiliser use or private water storage to manage risks. However, the lack of structured, community-based support appears to have contributed to feelings of isolation and helplessness, which are key drivers of depressive symptoms.
The study also identified a strong link between financial debt and stress. With a recorded odds ratio of 2.53, household debt was a major predictor of psychological morbidity. This suggested that the economic fallout of a climate disaster often acted as both a trigger and a sustaining factor for mental ill-health, as farmers struggled to repay loans after their harvests were destroyed.
Behavioural risks and the role of alcohol
The research also shed light on the intersection of climate stress and behavioural health. Regular alcohol consumption was strongly associated with both depression and anxiety among the surveyed farmers. The authors argued that alcohol use in these communities was likely a “stress-related coping behaviour” rather than an independent cause of mental health issues.
As farmers face repeated trauma and economic loss, the tendency to use substances as a temporary escape increases. This creates a dangerous cycle where the physical and mental health of the workforce declines, further reducing the productivity and adaptive capacity of the agricultural sector.
Implications for national policy and industry resilience
The researchers called for a formal shift in how national governments and agricultural bodies approached climate adaptation. They argued that mental health must be integrated into national climate frameworks, moving beyond a sole focus on infrastructure and crop yields.
One of the primary recommendations is the inclusion of climate-related mental health issues under the Occupational Diseases and Environmental Diseases Control Act. This would allow for a national health surveillance program that includes routine psychological screening for workers in high-risk districts.
The study suggested that early detection and timely referral for counselling could mitigate the long-term impact of climate disasters. Furthermore, the authors emphasised the need for “cross-sector collaboration” between ministries of health and agriculture to provide coordinated financial risk protection and psychosocial support.
Another vital step could be establishing local cooperatives and peer-support networks. By strengthening social cohesion, these institutions could reduce the isolation felt by farmers in disaster-prone regions and provide a collective buffer against the psychological impacts of environmental change.
A call for longitudinal action
While the study provided a robust snapshot of the current crisis, the authors acknowledged that more long-term research would be needed. Future studies should focus on how mental health fluctuates over time as climate patterns shift and whether specific interventions, such as targeted insurance schemes or community-led adaptation projects, can successfully break the link between disaster and distress.
For the agricultural industry, the message is clear: the resilience of the global food supply depends not just on the hardiness of the crops but also on the mental well-being of the people who grow them. As the “human cost” of climate change becomes more apparent, the integration of mental health support into the agricultural supply chain is becoming an economic and ethical necessity.
Source: Journal of Occupational Medicine and Toxicology
“Mental health impacts of climate-related hazards among farmers: evidence from a community-based study”
https://doi.org/10.1186/s12995-026-00504-w
Authors: Ratanon Kaewvijit, et al