Iron for Vegans — Sources, Absorption, and Deficiency Risk

Iron is essential for transporting oxygen in the blood and supporting energy metabolism. Plant-based sources include lentils, chickpeas, beans, tofu, spinach, kale, pumpkin seeds, and fortified cereals. Unlike heme iron from animals, plant foods provide non-heme iron, which is less readily absorbed. However, pairing these foods with vitamin C—such as squeezing lemon over spinach or adding bell peppers to lentil soup—can significantly boost absorption. Whole grains, nuts, and seeds also contribute, making a varied diet key to meeting needs.

Adults typically require 8–18 mg of iron daily, with higher needs during menstruation, pregnancy, and periods of rapid growth. Non-heme iron absorption is influenced by overall iron status; those with low stores absorb more efficiently. Tannins in tea and coffee, as well as calcium from dairy or supplements, can inhibit absorption if consumed with iron-rich meals. Vegans and vegetarians may need up to 1.8 times the recommended intake due to lower bioavailability, though many adapt over time.

A practical daily pattern includes a breakfast of fortified oatmeal with strawberries, a lunch of lentil salad with tomatoes and citrus dressing, and a dinner of stir-fried tofu with broccoli and red peppers. Snacking on pumpkin seeds or dried apricots adds extra iron. For those with diagnosed deficiency or heavy menstrual bleeding, a low-dose iron supplement (e.g., 18–27 mg) may be warranted, but only after consulting a healthcare provider. Avoid high-dose supplements unless prescribed, as excess iron can be harmful.