According to Gram Research analysis of 8 clinical trials with 382 dialysis patients, nutrition supplements significantly improved serum albumin levels by 0.372 g/dL compared to no supplements. Both oral nutrition drinks and nutrients given during dialysis treatment were effective, suggesting these supplements can help prevent malnutrition in kidney dialysis patients.
A Gram Research analysis of 8 clinical trials involving 382 kidney dialysis patients found that special nutrition supplements, either drinks taken by mouth or nutrients given during dialysis treatment, significantly improved a key health marker called serum albumin. Albumin is a protein that shows whether someone is getting enough nutrition. The study showed that patients receiving these supplements had albumin levels that were noticeably higher than patients who didn’t receive them. This matters because low albumin levels in dialysis patients are linked to worse health outcomes and higher risk of complications. The findings suggest that adding these nutritional supports to standard dialysis care could help keep patients healthier.
Key Statistics
A 2026 meta-analysis of 8 randomized clinical trials involving 382 hemodialysis patients found that nutrition supplements increased serum albumin levels by 0.372 g/dL compared to control groups (P = .007).
According to research reviewed by Gram, both oral nutrition supplements and intravenous nutrition given during dialysis significantly improved albumin markers in 382 dialysis patients across 8 high-quality trials published between 2019-2024.
A meta-analysis of dialysis patients showed that nutrition supplementation improved serum albumin with consistent results across different statistical analysis methods, with no evidence of publication bias among the 8 included studies.
The Quick Take
- What they studied: Whether giving kidney dialysis patients special nutrition supplements (either as drinks or through their dialysis treatment) helps improve their nutritional status, measured by a blood protein called albumin.
- Who participated: 382 adult patients who receive hemodialysis (a treatment that filters waste from the blood when kidneys don’t work). The study combined results from 8 high-quality clinical trials published between 2019 and 2024.
- Key finding: Patients who received nutrition supplements had albumin levels that were 0.372 g/dL higher than patients who didn’t receive them. This difference was statistically significant (P = .007), meaning it’s very unlikely to have happened by chance.
- What it means for you: If you or a loved one receives dialysis, asking your doctor about nutrition supplements might help prevent malnutrition and related health problems. However, this should be part of your personalized treatment plan, not a replacement for standard dialysis care.
The Research Details
This was a meta-analysis, which means researchers looked at 8 separate high-quality studies that had already been completed and combined all their results together. This approach is powerful because it gives a bigger picture than any single study could provide. The researchers carefully searched medical databases for studies published between 2019 and 2024 that tested nutrition supplements in dialysis patients. They only included studies that met strict quality standards, scoring at least 70% on a checklist of research quality measures. Out of 137 studies they initially found, only 8 met these high standards.
The nutrition supplements tested came in two forms: oral nutrition supplements (ONS), which are special drinks patients drink by mouth, and intradialytic parenteral nutrition (IDPN), which is a way of giving nutrients directly into the bloodstream during the dialysis treatment itself. Researchers compared patients who received these supplements to control groups who didn’t receive them, and measured how much their serum albumin (a blood protein) changed.
The researchers used statistical software to combine the results from all 8 studies in a way that accounts for differences between studies. They also checked whether the results were consistent across different analysis methods and looked for signs that studies with positive results were more likely to be published (publication bias).
This research approach is important because dialysis patients often struggle with malnutrition, which can lead to serious complications like infections, weak bones, and poor wound healing. Serum albumin is a reliable marker that doctors use to spot malnutrition early. By combining results from multiple high-quality studies, this meta-analysis gives us stronger evidence than any single study could provide. The fact that results were consistent across different statistical methods and showed no publication bias makes the findings more trustworthy.
This study has several strengths: it only included randomized clinical trials (the gold standard for research), it used strict quality criteria to select studies, results were consistent across different analysis methods, and there was no evidence of publication bias. The main limitation is that only 8 studies met the quality threshold, which is a relatively small number. Additionally, the studies varied in how they gave supplements and how long they lasted, which could affect results. The effect size, while statistically significant, is modest in practical terms.
What the Results Show
The main finding was that patients receiving nutrition supplements (either oral drinks or intravenous nutrition during dialysis) had serum albumin levels that were 0.372 g/dL higher than control patients. To put this in perspective, this represents a meaningful improvement in a key marker of nutritional status. The statistical analysis showed this difference was very unlikely to occur by chance (P = .007), meaning the researchers can be confident this is a real effect.
When researchers used a different statistical method (called the fixed-effects model), the results remained consistent and robust. This consistency across different analysis approaches strengthens confidence in the finding. The researchers also specifically looked for publication bias, the tendency for studies with positive results to be published more often than studies with negative results, and found no evidence of this problem.
The improvement in albumin levels was seen with both types of supplements tested: oral nutrition supplements that patients drink and parenteral nutrition given during dialysis sessions. This suggests that providing extra nutrition in either form can help dialysis patients maintain better nutritional status.
While the primary focus was on serum albumin, the improvement in this marker is important because it indicates better overall nutritional status. Low albumin in dialysis patients is associated with increased risk of infections, longer hospital stays, and higher mortality rates. By improving albumin levels, these supplements may help reduce these serious complications, though the studies included in this analysis didn’t directly measure those outcomes.
This finding aligns with previous research suggesting that malnutrition is common in dialysis patients and that nutritional interventions can help. However, this meta-analysis provides stronger evidence by combining multiple recent studies (2019-2024) using rigorous quality standards. It confirms that both oral and intravenous nutrition approaches can be effective, giving doctors more options for helping patients.
The study included only 382 patients across 8 trials, which is a relatively small sample size for a meta-analysis. The individual studies varied in how long they lasted, how much supplement they gave, and which patients they included, which could affect how well the results apply to all dialysis patients. The improvement in albumin, while statistically significant, was modest in size (0.372 g/dL). The studies didn’t measure whether these improvements led to fewer infections, shorter hospital stays, or better survival rates, only the albumin blood marker. Additionally, the research doesn’t tell us which patients benefit most or whether benefits last long-term after supplements are stopped.
The Bottom Line
For dialysis patients with signs of malnutrition or low albumin levels, nutrition supplements (either oral drinks or intravenous nutrition during dialysis) appear to be a helpful addition to standard care. This recommendation has moderate confidence based on the evidence. However, these supplements should be prescribed and monitored by your dialysis team as part of your personalized treatment plan, not used on your own. The decision to use supplements should consider your individual health situation, other medical conditions, and what your doctor recommends.
This research is most relevant for: (1) Adults receiving hemodialysis who have low albumin levels or signs of malnutrition, (2) Dialysis centers and nephrologists (kidney doctors) deciding on nutrition support strategies, (3) Patients and families looking to prevent malnutrition complications. This research is less relevant for patients with normal albumin levels or those receiving other types of kidney replacement therapy (like peritoneal dialysis or transplant).
Based on the studies reviewed, improvements in albumin levels typically appear within weeks to a few months of starting supplements, though the exact timeline varies. Most studies lasted 8-24 weeks. You shouldn’t expect immediate changes, give the supplements time to work and have your albumin levels checked regularly with your doctor to see if they’re helping.
Frequently Asked Questions
Do nutrition supplements really help dialysis patients?
Research shows that nutrition supplements do help. A meta-analysis of 8 clinical trials with 382 dialysis patients found that supplements increased serum albumin (a key nutrition marker) by 0.372 g/dL compared to no supplements. Both oral drinks and intravenous nutrition were effective.
What type of nutrition supplement is better for dialysis patients?
Both oral nutrition supplements (drinks) and intravenous nutrition given during dialysis (IDPN) improved albumin levels in studies. The best choice depends on your individual situation and what your dialysis team recommends. Your doctor can help decide which works best for you.
How long does it take to see improvement from nutrition supplements?
Most studies showed improvements within 8-24 weeks of starting supplements. Albumin levels typically improve gradually, so have your blood work checked regularly (usually monthly) to track progress. Don’t expect immediate changes.
Why is serum albumin important for dialysis patients?
Serum albumin is a blood protein that shows whether someone is getting enough nutrition. Low albumin in dialysis patients is linked to infections, longer hospital stays, and higher health risks. Improving albumin helps prevent these serious complications.
Should all dialysis patients take nutrition supplements?
Not necessarily. Supplements are most helpful for dialysis patients with low albumin levels or signs of malnutrition. If your albumin is normal, you may not need supplements. Your dialysis team should test your albumin and recommend supplements based on your individual needs.
Want to Apply This Research?
- Track your serum albumin levels at each lab visit (typically monthly for dialysis patients). Record the date, albumin value, and whether you’re taking nutrition supplements. Look for an upward trend over 2-3 months.
- If your doctor prescribes nutrition supplements, set daily reminders to drink oral supplements at the same time each day, or mark your calendar for IDPN sessions during dialysis. Log each time you take them to stay consistent.
- Create a simple chart showing your albumin levels over time. Share this with your dialysis team at each visit. Also track any changes in how you feel, energy levels, appetite, or how well you tolerate dialysis, as these may improve alongside albumin levels.
This article summarizes research findings and is for educational purposes only. It is not medical advice. Nutrition supplements for dialysis patients should only be started under the supervision of your nephrologist (kidney doctor) or dialysis care team. Individual needs vary based on lab values, medical history, and other factors. Always consult with your healthcare provider before starting any new supplement or changing your dialysis care plan. This research shows association and improvement in albumin markers but does not prove that supplements prevent all complications or improve survival rates.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.
