Are Kidney Beans Good for Anemia?

Yes, kidney beans can support an iron-rich diet for iron-deficiency anemia because they provide iron needed to make hemoglobin.

They are a food, not a proven treatment for anemia, and they cannot replace a diagnosis or prescribed care. For a broader guide to food choices, see the best foods for anemia.

Can kidney beans help with anemia?

Kidney beans can contribute iron to meals when anemia is caused by an iron deficiency. They also provide folate, a nutrient needed to make healthy red blood cells. A diet that supplies enough iron and folate supports normal blood-cell production.

Anemia has several possible causes, however, and eating kidney beans will not address all of them. Blood loss, vitamin deficiencies, chronic disease and inherited conditions are among the possible causes. A clinician can help identify the cause and recommend appropriate treatment.

How might kidney beans support healthy blood?

Iron is needed to make hemoglobin, the protein in red blood cells that carries oxygen around the body. When the body does not have enough iron, it may not be able to make enough healthy red blood cells. Kidney beans add dietary iron, but the amount absorbed is only part of the amount present in the food.

The iron in kidney beans is non-heme iron, the form found in plant foods. It is generally less readily absorbed than heme iron from animal foods. Other components of a meal can affect how much non-heme iron the body absorbs.

Vitamin C helps the body absorb non-heme iron when eaten at the same meal. Try kidney beans with a vitamin C source such as bell pepper, tomato or lemon. Phytates, naturally present in beans and some other plant foods, can reduce iron absorption; tea and coffee with a meal can also reduce it.

For related meal-planning ideas, see the best drinks for anemia.

What does the evidence say about kidney beans and anemia?

Evidence specific to kidney beans as an anemia treatment is limited. The available 1975 investigation of kidney bean toxic constituents examined safety-related compounds, not whether kidney beans improve anemia in a clinical trial. It does not establish that eating kidney beans raises hemoglobin or corrects anemia.

The role of iron in making hemoglobin is well established, but that is different from evidence that kidney beans alone treat anemia. Their usefulness depends on the cause of the anemia, the rest of the diet and any treatment a clinician recommends.

How can you use kidney beans in an iron-rich diet?

Add cooked kidney beans to meals you already enjoy, such as a bean salad with bell pepper and lemon or a warm bean and tomato dish. Pairing kidney beans with a vitamin C-containing food at the same meal can help with iron absorption. Consider having tea or coffee between meals rather than alongside an iron-rich meal.

Canned kidney beans are already cooked and can be added to a meal as they are; drain and rinse them if you prefer. Check the label if you need to manage sodium intake. Rinsing does not remove all of their iron.

Never eat raw or undercooked kidney beans. For dried kidney beans, soak them for at least 5 hours, discard the soaking water, and boil them in fresh water for at least 30 minutes, following U.S. Food and Drug Administration safety guidance for red kidney beans. Soaking alone or using a slow cooker alone does not reliably destroy the naturally occurring toxins.

Kidney beans can be part of a regular eating pattern, but a single meal will not correct an iron deficiency. If a clinician prescribes iron or another treatment, continue following that plan and ask how food fits into it.

Who should be careful, and when should you see a doctor?

See a clinician promptly for persistent tiredness, unusual paleness, shortness of breath with activity or heavy menstrual bleeding. These symptoms can have many causes. A blood count and other tests, such as ferritin, may help a clinician determine whether anemia is present and whether iron deficiency is involved.

Seek emergency care for chest pain, trouble breathing at rest, fainting or severe bleeding. Prompt evaluation is especially important if you are pregnant or if a child has symptoms of anemia; treatment should be guided by a clinician rather than food alone.

People with kidney disease may need individual advice about potassium or phosphorus in foods, including kidney beans. People with iron overload disorders or anemia that is not caused by iron deficiency should ask a clinician before taking iron supplements. Iron supplements can be dangerous in excess, especially for children, so keep them out of children’s reach.

If you take medication or prescribed iron and have questions about meals, absorption or side effects, speak with your clinician or pharmacist. Do not stop medication or substitute kidney beans for prescribed treatment.