According to Gram Research analysis, text message reminders help dialysis patients control their fluid intake and reduce salt consumption. In a 6-month randomized controlled trial, 88% of patients receiving personalized text messages kept their fluid weight gain at or below the recommended 3.5% of body weight per session, compared to 63% of patients receiving only standard care. Patients receiving text messages also reduced their daily sodium intake by an average of 313 milligrams more than the control group.
People receiving hemodialysis, a life-saving treatment for kidney disease, face strict dietary rules to stay healthy. A new study tested whether simple text messages could help patients follow these rules better. Researchers in Australia sent personalized text messages about food choices to dialysis patients for 6 months. Compared to patients who didn’t receive messages, those who got texts were more likely to control their fluid intake and eat less salt. The findings suggest that easy-to-use technology like texting could help kidney patients manage their diet and improve their health outcomes.
Key Statistics
A 2026 randomized controlled trial of dialysis patients found that 88% of those receiving personalized text messages about diet met their fluid weight gain targets, compared to 63% of patients receiving standard care only.
Patients receiving text message reminders reduced their dietary sodium intake by an average of 313 milligrams per day more than control group patients over a 6-month period, according to a 2026 trial published in the American Journal of Kidney Diseases.
In a 2026 randomized controlled trial, dialysis patients receiving text messages showed a mean reduction in interdialytic weight gain of 0.37 kilograms per session compared to the control group.
The Quick Take
- What they studied: Whether text messages reminding people about healthy eating choices could help dialysis patients follow their special diet and control how much fluid they gain between treatments.
- Who participated: People receiving regular hemodialysis treatment at 6 dialysis centers in Sydney, Australia. Some received personalized text messages about food choices, while others received only their regular medical care.
- Key finding: Patients who got text messages were much more likely to keep their fluid weight gain under control (88% met targets versus 63% in the regular care group). They also ate significantly less salt, dropping their intake by about 313 milligrams per day.
- What it means for you: If you or a loved one receives dialysis, simple text message reminders about diet might help you follow your doctor’s nutrition plan more easily. This is a low-cost tool that could improve your health between treatments. However, this was a short-term study in one city, so results may differ in other places.
The Research Details
This was a randomized controlled trial, which is considered one of the strongest types of research studies. Researchers randomly divided dialysis patients into two groups: one group received personalized text messages about dietary choices for 6 months, while the other group received only their usual medical care. The text messages were semi-personalized, meaning they were tailored somewhat to each person’s needs but sent through an automated system that could reach many patients at once. Researchers measured several important health markers at the start and end of the 6-month period, including how much weight patients gained between dialysis sessions and their blood chemistry results. They also tracked what patients actually ate using dietary intake surveys.
Dialysis patients must carefully control their diet because their kidneys no longer filter waste and extra fluid from their blood. Too much salt and fluid can cause dangerous swelling and heart problems. Most dialysis patients struggle to follow these strict rules because they’re complicated and require constant attention. This study tested a simple, scalable solution: text messages that could reach many patients without requiring expensive one-on-one counseling. If text messages work, hospitals could use this approach to help more patients stay healthy without spending a lot of extra money.
This study has several strengths: it was a randomized controlled trial, which means patients were randomly assigned to groups, reducing bias. The researchers measured both clinical health markers and actual dietary intake, giving a complete picture. However, the study only lasted 6 months, so we don’t know if benefits continue longer. It was conducted in one city in Australia, so results might differ in other countries or rural areas. The study size wasn’t specified in the abstract, which makes it harder to judge how reliable the findings are.
What the Results Show
The most important finding was that text messages helped patients control their fluid intake between dialysis sessions. Interdialytic weight gain (IDWG), which measures how much fluid patients accumulate between treatments, is a key health marker for dialysis patients. In the text message group, 88% of patients kept their weight gain at or below the recommended 3.5% of body weight per session, compared to only 63% in the regular care group. This difference was statistically significant, meaning it’s unlikely to have happened by chance. The intervention group also reduced their dietary sodium intake by an average of 313 milligrams per day more than the control group. This is important because salt makes people thirsty and causes fluid retention, so eating less salt helps patients drink less and gain less weight between treatments.
The study also found modest reductions in other dietary areas for patients receiving text messages. These included slightly lower intake of energy (calories), carbohydrates, protein, fat, and fiber. Additionally, patients in the text message group ate fewer discretionary foods (like snacks and desserts) and fewer vegetables. The reduction in vegetables is interesting because it wasn’t necessarily the goal, suggesting that patients may have been reducing overall food intake rather than making targeted dietary changes. These secondary findings were smaller than the improvements in fluid control and salt intake, but they show that the text messages influenced eating patterns across multiple food categories.
This study builds on previous research showing that dialysis patients struggle with dietary adherence and that technology-based interventions can help. Most previous studies used more intensive interventions, like frequent counseling sessions or complex apps. This study is notable because it tested a simpler, more scalable approach using basic text messaging. The findings align with other research suggesting that regular reminders and personalized feedback improve health behaviors. However, this is one of the first studies to specifically test semi-personalized text messages for dialysis patients in a randomized controlled trial format, making it a valuable addition to the evidence base.
The study has several important limitations. First, it only lasted 6 months, so we don’t know if patients continued following the diet after the text messages stopped. Second, the study was conducted in Sydney, Australia, in an urban setting, so results might not apply to rural areas or other countries with different healthcare systems and food cultures. Third, the abstract doesn’t specify how many patients participated, making it difficult to assess how reliable the findings are. Fourth, we don’t know if the improvements came from the text messages themselves or from the extra attention patients received by being in a study. Finally, the study measured dietary intake through surveys, which rely on patients remembering what they ate, and this can be inaccurate.
The Bottom Line
If you receive hemodialysis, talk to your kidney doctor or dietitian about whether personalized text message reminders could help you follow your diet plan. This approach appears to be helpful for controlling fluid intake and reducing salt consumption, which are critical for dialysis patients. The evidence is moderately strong based on this randomized controlled trial, though longer-term studies are needed. Your healthcare team can help you set up text reminders tailored to your specific dietary needs and goals.
This research is most relevant for people receiving maintenance hemodialysis who struggle to follow their dietary restrictions. It may also interest dialysis centers and nephrologists (kidney doctors) looking for affordable ways to improve patient outcomes. Family members and caregivers of dialysis patients could also benefit from understanding how text messages might help their loved ones. This research is less relevant for people with early-stage kidney disease or those receiving other types of kidney treatment.
Based on this study, you might expect to see improvements in fluid control within a few weeks of starting text message reminders, with more noticeable changes by 6 months. However, this depends on how consistently you follow the messages and your individual health situation. Talk to your dialysis team about realistic goals for your specific case.
Frequently Asked Questions
Can text messages really help dialysis patients follow their diet?
Research shows text messages can help. A 2026 trial found that dialysis patients receiving personalized text reminders were 25 percentage points more likely to control their fluid intake and reduced salt consumption by 313 milligrams daily compared to standard care.
How much weight should dialysis patients gain between treatments?
Dialysis patients should aim to gain no more than 3.5% of their body weight between sessions. The study found that text message reminders helped 88% of patients meet this target, compared to 63% without reminders.
Why is controlling salt intake important for dialysis patients?
Salt makes people thirsty and causes the body to retain fluid. Dialysis patients must limit fluid because their kidneys can’t filter it out. Eating less salt helps patients drink less and reduces dangerous fluid buildup between treatments.
How long do the benefits of text message reminders last?
This study only measured benefits over 6 months, so we don’t know if improvements continue after text messages stop. Longer-term research is needed to determine whether patients maintain dietary changes over years.
Would text message reminders work for dialysis patients everywhere?
This study was conducted in Sydney, Australia, so results may not apply to all locations. Different countries have different food cultures, healthcare systems, and patient populations, which could affect how well text reminders work.
Want to Apply This Research?
- Track your interdialytic weight gain at each dialysis session and record it in your app. Set a target of no more than 3.5% of your body weight gained between sessions, and log your actual gain to see if you’re meeting this goal. For example, if you weigh 70 kilograms, aim for no more than 2.45 kilograms gained between sessions.
- Enable daily text message reminders about your specific dietary goals, such as limiting salt intake or drinking less fluid. Set reminders to appear at times when you’re most likely to make food choices, like before meals or when shopping for groceries. Use the app to log what you eat and receive immediate feedback on whether you’re meeting your sodium and fluid targets.
- Review your weekly fluid gain trends in the app and compare them to your target range. Track your sodium intake daily using the app’s food database, aiming to stay below your personalized sodium limit. Share your progress with your dialysis team monthly to adjust your goals and text message reminders as needed.
This research summary is for educational purposes only and should not replace professional medical advice. Dialysis patients have complex nutritional needs that vary based on individual health conditions, lab results, and treatment plans. Before making any changes to your diet or following any recommendations based on this research, consult with your nephrologist (kidney doctor) or registered dietitian. They can provide personalized guidance based on your specific medical situation. This study was conducted in Australia and may not apply to all healthcare settings or populations.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.