# Nutrition and diets in acute myeloid leukemia
In acute myeloid leukemia (AML), nutrition plays a role at different times: during intensive chemotherapy, in supporting the immune system, and in the recovery period after treatment. The question of which nutrition "helps" is not straightforward: many studies look at underlying biological processes (such as energy metabolism and mitochondrial function of leukemic cells), but this does not always translate directly into recommendations for patients. Here is what is known about dietary patterns and specific substances that appear in research.
Protein-rich nutrition
ResearchediPositive results in clinical studies, not yet standard treatment
This dietary pattern emphasizes sufficient protein through meat, fish, dairy, beans and nuts, based on the idea that chemotherapy causes much physical breakdown and the body needs extra building blocks.
Recent research shows that nutritional status at diagnosis and during follow-up treatment influences the outcome. An observational study from 2026 followed children with cancer in low-income countries and found that poor nutritional status (measured as weight and blood values) was associated with shorter survival. Although this study does not only concern AML and does not prove that more protein helps, it does suggest that avoiding malnutrition is important.
Serum albumin (a blood protein that indicates how well the body is nourished) also proved important after stem cell transplantation: patients with higher albumin levels had better outcomes. This suggests that adequate protein intake can make sense, especially around intensive treatments.
**Risks:** During chemotherapy, appetite and taste sensation can change, making it difficult to eat a lot. Some medications cause nausea or digestive complaints. Individual adjustment helps here.
Nutrition with a focus on vitamins and minerals
ResearchediPositive results in clinical studies, not yet standard treatment
This pattern emphasizes vegetables, fruit, whole grain products and foods rich in folate, iron, zinc and other cofactors that are important for cell division and immune function.
Folate deserves special attention: a case recently reported showed that severe folate deficiency looks so much like AML that it was initially confused with myelodysplastic syndrome or AML. This underscores that a deficiency in this vitamin can be serious. Folate is found in leafy greens, legumes and fortified products; certain chemotherapies (such as methotrexate) affect folate metabolism.
Iron metabolism in leukemic cells has recently received renewed attention: research from 2026 pointed to a link between iron homeostasis and epigenetic changes that occur in certain AML subtypes. Although this research area is still exploratory, it underscores that minerals have more than superficial nutritional value.
**Risks:** Excessive iron supplementation can be harmful and is not suitable for everyone. Vitamin pills can interfere with certain chemotherapies. This requires guidance from a doctor or dietician.
Mediterranean dietary pattern
ResearchediPositive results in clinical studies, not yet standard treatment
This pattern combines plenty of vegetables, fruit, nuts, fish, vegetable oils and limits red meat — a way of eating that in many studies is associated with good health outcomes.
For AML specifically, the evidence is limited, but a general approach in which inflammatory markers decrease and gut flora is supported can be worthwhile, especially in recovery periods. Research into metabolic changes (particularly NAD metabolism and mitochondrial energy metabolism) in AML cells shows that nutrition that minimizes cell stress and promotes repair capacity can be supportive.
**Risks:** During chemotherapy and especially with low immune counts, certain unwashed vegetables and raw products can be risky. Adjustments are necessary and should be part of a treatment plan.
Ketogenic diet
ExperimentaliOngoing in study setting, outcome still unknown
A ketogenic diet severely restricts carbohydrates and increases fat and protein, causing the body to enter ketosis — a metabolic state in which fat is broken down for energy.
Biological investigations suggest that AML cells are heavily dependent on specific metabolic pathways; some preliminary laboratory data support the possibility that ketogenic states may inhibit the growth of certain leukemic cells. A 2026 study examined ATP synthase inhibition (a mitochondrial energy process) as a way to selectively attack AML cells. This research is still very early, and ketogenic diet has not directly emerged from it, but it illustrates that metabolism is central.
**Risks:** Ketogenic diet is radical and difficult to maintain, especially during cancer treatment when appetite is already limited. It can restrict energy sources that the body urgently needs now. This is not recommended without strong medical supervision and is not practical for most AML patients.
Periodic fasting or intermittent fasting
ExperimentaliOngoing in study setting, outcome still unknown
In periodic fasting, very little is eaten over hours or days, based on the idea that this places metabolic stress on cancer cells and stimulates immune function.
For AML specifically, research is scarce. General cancer research shows mixed results: some laboratory work suggests that short fasting periods can destabilize certain cells, but clinical evidence in cancer patients is weak. For AML patients, the situation is different: they are already undergoing heavy chemotherapy and have no energy reserves to spare. Fasting can worsen malnutrition at the moment when the body most needs recovery.
**Risks:** Strongly discouraged during active chemotherapy. Can lead to malnutrition, weakening, and reduced tolerance for treatment. Only conceivable under close medical supervision and outside intensive therapy phases, and even then not standard.
Nutrition focused on gut health and microbiome
ResearchediPositive results in clinical studies, not yet standard treatment
This pattern emphasizes nutrition that supports healthy gut bacteria: plenty of fiber, probiotic or prebiotic foods.
Chemotherapy disrupts the gut flora, which has implications for both immunity and infection risk. A 2026 study found that certain hypomethylating chemotherapies (widely used in AML) cause significant gastrointestinal side effects and can cause nutritional problems. Supporting gut health — through adequate fiber (if tolerated) and variety — can help manage side effects better.
The connection is indirect: a healthier gut barrier and microbiome help with energy absorption and infection defense, both crucial after chemotherapy.
**Risks:** With low immune counts, food choices must be made carefully due to infection risks. High roughage (fiber) can worsen diarrhea. This should be coordinated with your care team for each phase.
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Conclusion
Nutritional choices with AML are individualized. The disease itself, the chemotherapy used, possible transplantation, side effects, and personal circumstances determine what is helpful and safe. Much of the biological research mentioned above examines how leukemic cells metabolize and how nutrition or specific substances can influence that — but this does not yet translate directly into recipes or guidelines for daily eating.
Always discuss nutritional choices with your care team or a dietitian specializing in cancer. They can tailor recommendations to what is safe and feasible in your own situation.
_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._