Top Iron-Rich Foods
| Rank | Food | Mechanism | Dosage | Warnings |
|---|---|---|---|---|
| #1 | Beef Liver | 4.9mg heme iron/100g (27% DV). Heme iron absorbs 15-35% vs 2-20% for non-heme. Also B12 + folate + c... | 50-100g, 1-2x/week | Vitamin A toxicity at liver >200g/week. Pregnancy: limit liver intake.... |
| #2 | Clam | Clams/oysters: 12-28mg iron/100g. Heme + non-heme mix. Also B12 for pernicious anemia prevention.... | 100g, 1-2x/week | Shellfish allergy. Purine content: gout caution.... |
| #3 | Spinach | 2.7mg non-heme iron/100g (15% DV). Pair with vitamin C (lemon juice) for 2-6x absorption boost. Cook... | 100-200g cooked daily | Do NOT take with coffee/tea within 2h (tannins block 60-90%). Calcium also block... |
| #4 | Lentils | 3.3mg iron/100g (19% DV). Fiber feeds gut bacteria that enhance mineral absorption.... | 100g cooked, 3-4x/week | Phytates reduce absorption ~50%. Soak 12h + cook thoroughly. Pair with vitamin C... |
| #5 | Red Meat | 2.6mg heme iron/100g (14% DV). Heme iron absorption not affected by phytates or tannins. Also provid... | 150-200g, 2-3x/week | Limit processed red meat (IARC Group 2A carcinogen). Fresh/whole cuts preferred.... |
✅ Absorption Boosters
vitamin_ccitrusbell pepperstrawberry
⚠️ Absorption Blockers (Avoid Within 2h)
coffeeteacalciumphytatesoxalatestannins
💊 Supplement Options
Iron Bisglycinate
Why: Chelated form. 2-4x better absorption than ferrous sulfate. Minimal GI side effects — no constipation or nausea.
Dosage: 25-50mg elemental iron daily
⚠️ Test ferritin first — iron overload (hemochromatosis) is dangerous. Keep away from children (fatal poisoning). Space from coffee/tea/calcium by 2h.