The best iron-rich foods and how to absorb them better

Food alone cannot always correct a significant iron deficiency, but what you eat has a real and measurable effect on how well your body maintains healthy iron levels, and how well it responds to treatment once your levels are back on track.

Not all iron is created equal, and understanding the difference between the two main types can make it much easier to build a diet that actually works for you.

Haem iron vs non-haem iron

Iron from animal sources, such as red meat, poultry, and fish, is called haem iron. Your body absorbs it far more efficiently than the non-haem iron found in plant foods like spinach, lentils, and fortified cereals.

This doesn’t mean plant-based eaters are destined to be iron deficient. It means a little more attention to combinations and timing goes a long way.

How to absorb more of the iron you eat

Pairing iron-rich foods with vitamin C significantly increases how much non-haem iron your body takes up. A glass of orange juice with a lentil dish, or peppers alongside a bean salad, makes a genuine difference.

Equally important is knowing what blocks absorption. Tea and coffee contain tannins that can reduce iron uptake by a significant margin if drunk with a meal; leaving an hour’s gap either side helps considerably. Calcium, whether from dairy or supplements, competes with iron for absorption too, so it’s worth separating the two where you can.

The best sources of iron

• Red meat, especially lamb and beef, among the richest and most bioavailable sources
• Dark poultry meat and oily fish such as sardines and mackerel
• Dark leafy greens: spinach, kale, spring greens
• Lentils, chickpeas, and other pulses
• Fortified breakfast cereals and wholemeal bread
• Pumpkin seeds, cashews, and dried apricots

When diet isn’t enough

For some people, particularly those with heavy periods, absorption problems, or more advanced deficiency, diet changes alone won’t be enough to restore healthy iron stores within a reasonable timeframe. That’s not a failure of willpower or diet quality; it simply reflects how much iron the body needs to replace.

If you’ve made genuine dietary changes and still don’t feel better, it’s worth having your ferritin and haemoglobin levels checked properly rather than assuming food alone should have fixed things.