No fruits or vegetables contain exactly zero calcium or iron, as trace amounts (often <5mg/100g) exist naturally in all plant foods due to soil uptake. However, some have negligible levels (<2mg calcium and <0.5mg iron per serving), making them effectively "zero" for restriction diets.
Lowest Calcium Fruits
Apples (6mg/medium), bananas (5mg), peaches/plums (6mg), watermelon (7mg), blueberries (6mg).
Lowest Calcium Vegetables
Corn/mushrooms (2mg/100g), bell peppers (10mg), eggplant (9mg), potatoes (12mg), cucumbers/zucchini (16mg).
Lowest Iron Fruits/Veggies
Watermelon/papaya (near trace), mushrooms (edible varieties ~0.2-0.5mg/100g), corn (~0.3mg). Most fruits like apples/bananas have <0.3mg iron/serving.
Practical Notes
These suit low-mineral needs (e.g., certain deficiencies or tests), but variety ensures balanced nutrition—pair with protein for absorption control per diabetes tips. Check USDA database for exacts.
0 comments