Micronutrient concerns are common in dialysis care, but they do not always require complex workups or broad supplement recommendations.
For clinicians, the most useful starting point is a practical one: identify patients at risk, look for patterns in intake and symptoms, and intervene
in a way the patient can realistically maintain.
Dialysis patients may be vulnerable to micronutrient gaps because of restricted diets, reduced appetite, medication effects, inflammation, and nutrient losses during treatment. Zinc, selenium, vitamin B6, and vitamin C are especially worth keeping on the clinical radar because changes in status may affect appetite, taste, wound healing, immune function, inflammation, anemia management, and the body’s ability to support protein production
and tissue repair—factors that can contribute to malnutrition and protein energy wasting.
Rather than treating micronutrients as a checklist, build them into routine dialysis care:
- Ask targeted intake questions.
Look for low fruit and vegetable intake, limited protein variety, reliance on ultra-processed foods, skipped meals, or overly restrictive diet patterns. - Screen for practical signs.
Pay attention to poor appetite, taste changes, mouth or skin changes, easy bruising, fatigue, delayed wound healing, declining protein intake,
and unexplained changes in nutrition status that may signal malnutrition risk. - Use labs thoughtfully.
Micronutrient testing can be helpful in select cases, but results may not fully reflect tissue stores and can be influenced by inflammation, fluid status, and dialysis timing. - Start with food when possible.
Help patients add renal-appropriate, nutrient-dense foods that fit their potassium, phosphorus, sodium, diabetes, and budget needs. - Supplement selectively.
Avoid blanket recommendations. Consider supplementation when risk is high, symptoms are consistent, intake is inadequate, or food-based strategies are not enough. - Plan follow-up before starting.
Document the reason for the intervention, review medication interactions, choose one change at a time when possible, and decide how progress
will be measured.
A food-first approach is still preferred, but it must be individualized. For one patient, the best next step may be adding zinc-rich protein foods to address
taste changes and low intake. For another, vitamin C intake may need attention because renal diet restrictions have unintentionally reduced fruit
and vegetable choices. For others, the biggest barrier may be pill burden, cost, swallowing difficulty, gastrointestinal tolerance, or inconsistent
medication routines.
When supplements are used, keep the approach conservative and intentional. Confirm the clinical rationale, consider guideline recommendations
when available, avoid unnecessary high doses, and use reputable products when possible. Starting several supplements at once can make it difficult
to know what helped—or what caused an adverse effect.
The goal is not to chase every possible deficiency. The goal is to notice when a patient’s diet, symptoms, treatment modality, or barriers suggest micronutrients may be contributing to a bigger nutrition problem, including protein energy wasting—and then choose a practical next step
the patient can follow.
For more resources on addressing nutrition needs for your dialysis patients, visit our Clinician Portal.
We thank our guest blogger Maiya Hogan, MS, RDN, CD, CNSC, Director, Research and Education for sharing her knowledge and writing this blog post!
