r/PlantBasedDiet • u/shoebeee95 • 11h ago
Where the iron actually comes from in a plant-based week (USDA numbers per normal serving, and one ordinary day that clears 18 mg)
Iron is the number people worry about most once meat is off the table, so I lined up the usual plant sources per normal serving, using USDA FoodData Central's figures.
Iron per serving
- Lentils, 1 cup cooked: 6.6 mg
- Chickpeas, 1 cup cooked from dry: 4.7 mg. USDA's figure for canned, drained and rinsed, is much lower, about 1.7 mg a cup.
- Edamame, 1 cup shelled: 3.5 mg
- Firm tofu, half a 14 oz block: 3.3 mg. That entry is one brand, and tofu varies, so check your label.
- Spinach, 1/2 cup cooked: 3.2 mg
- Tempeh, 4 oz: 3.1 mg
- Pumpkin seeds, 1 oz: 2.5 mg
- Rolled oats, 1/2 cup dry: 1.7 mg (plain oats; fortified instant packets are higher)
The targets: NIH's adult figures are 8 mg a day for men and for women over 50, and 18 mg for women 19 to 50. NIH's fact sheet puts the figure for vegetarians 1.8 times higher, because the iron in plants is absorbed less well.
The habit that does the most: put a vitamin C food in the same meal as the iron. Red peppers, citrus, tomatoes, strawberries and broccoli all count. Tea and coffee work the other way, so have them between meals rather than with your iron-heavy one. Spinach's iron is real, but it's bound up with oxalates and absorbed poorly, so count it as a bonus rather than the base.
One ordinary day: about 23.6 mg
- Breakfast: 1/2 cup oats cooked with 1 oz pumpkin seeds stirred in and a cup of strawberries on top: 4.8 mg
- Lunch: lentil soup with 1 cup lentils and 1/2 cup crushed tomatoes: 8.2 mg
- Snack: 1 cup shelled edamame: 3.5 mg
- Dinner: half a block of firm tofu stir-fried with 1/2 cup cooked spinach and a red pepper, over rice: 7.1 mg, not counting the rice
That clears 18 mg, and the vegetarian figure for men and women over 50 (about 14 mg), with vitamin C built into every meal. For a woman under 51 aiming at the vegetarian figure (about 32 mg), a second cup of lentils and a full cup of spinach at dinner get the same day there. If you've been told you're low, your doctor's plan comes first; this is just where the iron is.
What's your highest-iron dinner that isn't lentils?