According to research reviewed by Gram, giving people living with HIV in Kenya farming training and loans for irrigation pumps reduced household water insecurity more than standard care alone. Lower water insecurity was also linked to about 7% lower relative risk of depressive symptoms among 720 participants.
A new study from Kenya explored whether helping people with HIV improve their farming could also make daily water access easier and support mental health. Researchers followed 720 adults living with HIV who had food insecurity or were underweight. Some clinics offered farming training and a loan for an irrigation pump, seeds, and fertiliser, while others provided standard care only. After 24 months, households in the farming group had less water insecurity, meaning they had more reliable access to enough safe water for drinking, cooking, and washing. Lower water insecurity was linked to fewer depressive symptoms. According to research reviewed by Gram, water access may be an overlooked factor in the health of people living with HIV. The study cannot prove cause and effect for every health outcome, so larger studies are still needed.
Key Statistics
A 2026 secondary analysis of a randomized controlled trial with 720 adults living with HIV in Kenya found that households receiving a farming and irrigation program saw a greater reduction in water insecurity than those receiving standard care alone.
The same 2026 analysis found that decreases in household water insecurity were associated with a relative risk of depressive symptoms of 0.93 (95% confidence interval 0.90 to 0.95), meaning about 7% lower risk per step of improvement.
Data from a study conducted between 2016 and 2017 showed that water insecurity changes were not clearly linked to AIDS-defining illnesses or viral suppression in the overall group of 720 participants.
The Quick Take
- What they studied: Researchers asked whether a farming program that included irrigation tools could reduce households’ struggles to get enough water, and whether easier water access might improve health for people living with HIV.
- Who participated: 720 adults living with HIV in three counties in western Kenya. They were on long-term HIV medicine and either had trouble getting enough food or were underweight. About half were women, and most were middle-aged.
- Key finding: Households in the farming group had a larger drop in water insecurity than households receiving standard care alone (a difference score of -1.17, with a margin of error of 0.39, p=0.003). Less water insecurity was linked to about 7% lower relative risk of depressive symptoms (relative risk ratio 0.93, 95% confidence interval 0.90 to 0.95).
- What it means for you: If you live with HIV or support someone who does, having reliable water for farming and home use may matter for mood as well as food. This study does not prove that water access directly causes better mental health, so talk with your healthcare team before making major changes to your care or treatment.
The Research Details
This study is a secondary analysis, meaning researchers went back to data collected for a larger project called Shamba Maisha. That project was a randomized controlled trial, a type of study where groups are assigned to different treatments by chance. In this case, 16 HIV clinics were the groups, and half were randomly assigned to offer the farming program while the other half offered standard HIV care only. The study ran from 2016 to 2017, with participants followed for 24 months.
The farming program included training in sustainable farming methods and a loan that let participants buy an irrigation pump, seeds, and fertiliser directly from a vendor. Everyone in the study continued to receive standard HIV care. Researchers measured household water insecurity using a survey tool that had been tested and validated for people in this region. This means the questions had been checked to see whether they accurately capture water problems in this setting.
To look at health links, the team tracked changes in water insecurity over time and compared them with changes in depressive symptoms, AIDS-defining illnesses (serious illnesses that signal advanced HIV), and viral suppression (whether HIV is controlled well enough that the virus is barely detectable in the blood). This approach shows patterns over time, but it cannot fully prove that one change caused another.
Randomly assigning clinics to the farming program helps protect against outside factors skewing the results. Because participants and clinics were assigned by chance, the groups were more likely to be similar at the start, so differences that appeared later are more likely to come from the program itself. Following people for two years also shows whether changes lasted beyond a few weeks.
The second step, looking at how water changes were linked to health, is an observational analysis built on top of the trial. It can point to possible connections worth testing directly, but it cannot confirm that better water access is the cause of better mental health.
The core comparison comes from a randomized trial registered on ClinicalTrials.gov (NCT02815579), which adds transparency. The sample of 720 people is moderate in size and drawn from several clinics, which strengthens the findings somewhat. Water insecurity was measured with a regionally validated tool, which supports reliability.
Readers should keep in mind that this is a secondary analysis, so the study was not originally designed to answer every question reported here. The sex-by-sex results were labeled exploratory by the authors, meaning they are useful for generating ideas but are not firm conclusions. The journal’s impact factor is not reported here, so readers should judge the study mainly by its design and methods.
What the Results Show
The main result was that water insecurity dropped more in the farming group than in the standard care group over the 24 months. Water insecurity describes how often a household has trouble getting enough safe, reliable water for drinking, cooking, bathing, and farming. A drop in this measure means households had an easier time meeting their water needs.
The researchers then tested whether changes in water insecurity were linked to changes in health. They found that when water insecurity decreased, the relative risk of depressive symptoms also went down. The relative risk ratio of 0.93 means that the chance of depressive symptoms was about 7% lower for each step of improvement in water access, based on the study’s scale. The confidence interval of 0.90 to 0.95 suggests this estimate is fairly precise, and the very small p-value (below 0.001) indicates the link is unlikely to be due to chance alone.
The study did not find a clear link between water insecurity and AIDS-defining illnesses or viral suppression in the full group. This means these health measures did not change in a clear, consistent way with water access across all participants.
The researchers noticed a more complicated pattern for viral load in men. In men, decreases in water insecurity were associated with a higher relative risk of detectable viral loads. In plain terms, this means that for some men, better water access was linked to a greater chance that their HIV was not fully controlled. The authors describe this as exploratory and say it should be interpreted with caution. It may reflect chance, differences in how men used the farming income or time, or other factors the study did not measure.
These secondary findings matter because they show that improving water access is not a simple fix for every health goal. Keeping HIV well controlled depends heavily on consistent medicine use, clinic visits, and support. Any benefit from farming income or water access needs to be considered alongside these proven care steps.
Food insecurity has long been a focus of HIV programs, since hunger can make it harder to take medicine on schedule and stay healthy. Water access has received less attention, even though it affects hygiene, food preparation, and farming. This study adds to a growing argument that practical resources like water may be part of comprehensive HIV care, alongside food support and medical treatment.
The link between stress, mental health, and daily hardship is also well documented in many settings. This study fits that pattern by suggesting that easing a daily burden, such as finding enough water, may be connected to fewer depressive symptoms. Still, few previous studies have tested this idea in people living with HIV using a randomized design, so these findings should be seen as an important starting point rather than a settled answer.
This is a secondary analysis, so the study was not originally designed to answer all of these questions. The links between water insecurity and health outcomes are observational, which means they show associations rather than proof of cause and effect. Other factors, such as income, stress, or access to care, may have influenced both water access and mental health.
Water insecurity was measured through self-reported survey answers, which can be affected by memory or personal perception. The study took place in three counties in western Kenya, so results may not apply directly to other countries, climates, or health systems. The sex-specific findings were exploratory, and the unexpected result for viral loads in men needs confirmation in future research. Finally, the study followed participants for 24 months, so it cannot show whether benefits continue over many years.
The Bottom Line
Based on this trial, programs for people living with HIV may consider water access as one part of support, alongside food and medical care. Confidence is moderate that improving household water access can reduce water insecurity, since this was tested in a randomized trial. Confidence is lower that water improvements directly reduce depression, because that link came from an observational analysis within the trial. Confidence is low for the findings on viral loads in men, which the authors labeled exploratory.
People with HIV should continue taking their medicine as prescribed and keep regular clinic visits, regardless of changes in water or farming. Water access improvements should be viewed as a supportive step, not a replacement for proven treatment.
People living with HIV, especially those facing food insecurity, water shortages, or depression, may find this research relevant. Community health workers, HIV clinic staff, farmers’ groups, and program designers working in similar rural settings may also find useful ideas here.
People without HIV or those living in areas with reliable water and strong health services may find the results less directly applicable. Anyone experiencing persistent low mood or depression should speak with a healthcare provider, since water access alone is unlikely to be a complete treatment.
In this study, changes in water insecurity were measured over 24 months, so that is the timeframe researchers used to observe differences between groups. Households may begin to notice easier water access within months of starting irrigation tools, but the full benefit depends on how well the equipment is used and maintained. Changes in mood may take longer to show and may vary from person to person. Health markers like viral suppression depend mainly on medicine adherence and take time to respond to any changes.
Frequently Asked Questions
Does access to water affect mental health for people with HIV?
A 2026 analysis of a Kenyan trial found that decreases in household water insecurity were associated with about 7% lower relative risk of depressive symptoms. The findings suggest a link, but the study cannot prove that better water access directly causes improved mood.
What is water insecurity and why does it matter for health?
Water insecurity means a household regularly struggles to get enough safe, reliable water for drinking, cooking, washing, and farming. Research in Africa has linked it to worse health outcomes, and it may be a modifiable risk factor that programs can address.
Did irrigation farming programs help people living with HIV in Kenya?
In a randomized trial of 720 adults with HIV in western Kenya, participants who received farming training and a loan for an irrigation pump saw a larger drop in water insecurity than those receiving standard care. The program was tested over 24 months.
Can better water access improve HIV viral suppression?
The Kenyan study did not find a clear link between water insecurity and viral suppression in the overall group. In men, the authors observed a higher chance of detectable viral loads with lower water insecurity, but they labeled this exploratory and needing more research.
Want to Apply This Research?
- Track a simple weekly water access score on a 1 to 5 scale, where 1 means you often run out of water for drinking or cooking and 5 means water is reliably available for all household needs. Also log the number of days per week you collect or pay for water, and note any days you went without enough water.
- Plan water use around your daily routine by storing a safe supply for drinking and cooking, and by noting the days when water is hardest to get. If you farm, log when irrigation is used and how much time it saves you. Share these notes with your healthcare team or community health worker so they can help you find support if water access is a recurring problem.
- Review your water access score and mood check-ins together each month to see whether patterns appear over time. Schedule a short review with your healthcare provider every three months to discuss water access, food access, mood, and HIV care goals together. Over a year, look for trends rather than single bad days, and bring the data to your clinic to guide support decisions.
This article summarizes a secondary analysis of a clinical trial and is for general education only. It is not medical advice. The findings show associations and early evidence, not proof that changing water access will treat HIV or depression. People living with HIV should keep taking prescribed medicines and talk with a qualified healthcare provider before making changes to treatment, diet, or farming practices. If you have thoughts of self-harm or severe low mood, contact a doctor, local crisis service, or emergency services right away.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.