Is Kale Good for Anemia?

Partly, kale can contribute iron for red blood cell production when anemia is caused by iron deficiency, but it cannot treat anemia on its own. The available evidence does not show that kale alone corrects anemia. Ask a clinician to identify the cause and recommend treatment; the best foods for anemia can support an appropriate plan.

When is kale useful for anemia?

Kale can be a useful part of a varied diet, especially if you need more iron-rich plant foods. It contains iron and folate, nutrients your body needs to make healthy red blood cells. Its iron contribution is modest, so relying on kale as your main source is unlikely to be enough if your iron needs are high or your stores are depleted.

Anemia has several possible causes, including iron deficiency, vitamin B12 or folate deficiency, kidney disease, inflammation and inherited conditions. Ongoing blood loss can also cause or worsen anemia. Eating more kale does not address every cause, and dietary changes alone may not correct an iron deficiency.

How might kale help with anemia?

Kale supplies nonheme iron, the form found in plant foods. Your body uses iron to make hemoglobin, the protein in red blood cells that carries oxygen. If iron deficiency is contributing to anemia, obtaining enough absorbable iron is one part of restoring your supply.

Nonheme iron is generally less readily absorbed than the heme iron found in meat and seafood. Vitamin C can improve nonheme iron absorption when eaten at the same meal. Kale contains vitamin C, and pairing it with another vitamin C source, such as bell pepper or tomatoes, can help.

Folate also helps your body make red blood cells. But having anemia does not automatically mean you need more iron or folate. A clinician can interpret blood tests, including a complete blood count and iron tests when appropriate, and look for the underlying cause.

What does the evidence say about kale and anemia?

The available evidence does not establish that eating kale raises hemoglobin or treats anemia. Kale's nutritional role is plausible because it supplies nutrients involved in red blood cell production, but that is different from evidence that kale treats a diagnosed condition.

A 2017 laboratory study of fermented kale juice examined its nutritional composition. It did not test kale in people with anemia or measure whether it improved hemoglobin. Results from that study cannot tell us whether eating kale treats anemia.

If a clinician finds iron deficiency, the appropriate treatment depends on its severity and cause. Food can support treatment, but some people need iron prescribed by a clinician and an investigation for blood loss or another underlying problem.

How can you use kale if you have anemia?

Include kale as part of a meal rather than treating it as a remedy. Wash it under running water, then add it to a salad, soup or cooked dish. For a plant-based meal, combine kale with beans or lentils and add bell pepper or tomatoes for vitamin C.

Tea and coffee can reduce absorption of nonheme iron when consumed with a meal. If iron deficiency is a concern, consider having them between meals instead. A clinician or dietitian can help you adapt meals to your needs without excluding foods unnecessarily.

If you have been prescribed iron, take it as directed. Ask your clinician or pharmacist how to fit it around food, other supplements and medicines; do not stop prescribed treatment because you have added kale to your diet.

A drink can accompany an iron-containing meal, but it cannot replace diagnosis or treatment; see the best drinks for anemia for related choices.

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

See a clinician if you have symptoms such as unusual tiredness, paleness, dizziness or shortness of breath with activity, or if a blood test has shown anemia. Symptoms alone cannot identify the cause. Also seek evaluation for ongoing heavy menstrual bleeding or other suspected blood loss.

Seek emergency care for chest pain, difficulty breathing at rest, fainting, or significant ongoing bleeding. Black or bloody stools can signal bleeding and warrant urgent medical assessment, although iron supplements can also darken stools.

Pregnant people and children with suspected or diagnosed anemia should receive medical assessment rather than relying on kale or other food changes alone. Ask a clinician or dietitian about kale if you have kidney disease and have been told to limit potassium.

Kale is high in vitamin K, which can affect warfarin. If you take warfarin, keep your vitamin K intake consistent and speak with your clinician before making a major dietary change; do not stop your medication.

Do not start iron supplements solely because you feel tired. Excess iron can be harmful, and supplements should be kept away from children. If a child may have swallowed iron pills, seek emergency help or contact poison control immediately.