Which vegetable is cited as a classic example high in oxalates that limits calcium absorption?
Answer
Spinach
Spinach serves as the primary example discussed regarding the anti-nutrient oxalates. Oxalates are a class of anti-nutrients that strongly bind to calcium within the vegetable's matrix. Because of this potent binding affinity, even if spinach contains a large absolute amount of calcium, the majority of that calcium remains poorly absorbed by the human system. This specific mineral-binding action of oxalates is particularly critical for calcium bioavailability, more so than for minerals like iron or zinc in the context of oxalate interference.
Related Questions
What essential minerals does phytic acid readily chelate in the small intestine?How does sprouting (germination) effectively reduce phytic acid content in plant staples?Which vegetable is cited as a classic example high in oxalates that limits calcium absorption?What specific type of iron do tannins found in tea and coffee interfere with absorbing?Why does refined white flour contain significantly less phytic acid than whole wheat flour?What mineral supplements can competitively inhibit calcium absorption via intestinal transport mechanisms?Which digestive condition directly impairs mineral absorption by requiring stomach acid to free mineral bonds?How can excessive or poorly digested fat intake negatively impact calcium and magnesium absorption?Which preparation technique typically yields a greater phytate reduction in black beans: boiling or fermentation?What preparation strategy effectively reduces oxalate levels in vegetables like spinach?