calcium oxalate
noun
: a crystalline salt CaC2O4 normally deposited in many plant cells and in animals sometimes excreted in urine or retained in the form of urinary calculi
Examples of calcium oxalate in a Sentence
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There are four main types of kidney stones: calcium oxalate (the most common one), plus uric acid, struvite and cystine stones.
—
Daryl Austin, USA Today, 23 June 2025
Research shows that an oxalate-rich diet may lead to calcium oxalate kidney stones forming.14
Moderation is key: The recommended serving size for raw almonds is 1 ounce, which equals about 23 almonds.2 Almonds are nutrient-dense and calorie-dense, so the serving size is relatively small.
—Brittany Lubeck, Verywell Health, 9 June 2025
People at a higher risk for calcium oxalate kidney stones may want to limit their beet intake, but otherwise, enjoy experimenting with these in slightly sweet and savory recipes.
—Lauren Panoff, Verywell Health, 30 May 2025
People with kidney stones are often asked to follow a diet low in oxalates, substances that bind with calcium in the urine, leading to calcium oxalate kidney stones.
—Jillian Kubala, Health, 27 Feb. 2025
The National Kidney Foundation website has free information regarding calcium oxalate stones and following a low-oxalate diet.
—Jamie Johnson, Verywell Health, 15 Jan. 2025
To reduce your risk of kidney stones: Avoid high-oxalate foods: These include foods like spinach, chard, rhubarb, potatoes, beets, bran, chocolate, and nuts that contribute to the formation of calcium oxalate stones.18
Cut back on sodium: Sodium contributes to stone formation.
—Kashif J. Piracha, Verywell Health, 1 Jan. 2025
According to a 2021 review in Current Urology Report, males are more likely than females to have calcium oxalate stones, which are far harder than other types of kidney stones and less likely to break up.
—Jay N. Yepuri, Verywell Health, 21 Oct. 2024
Individuals with a history of calcium oxalate kidney stones should exercise caution when eating chia seeds.
—Amy Brownstein, Ms, Rdn, Verywell Health, 9 Sep. 2024
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Daryl Austin, USA Today, 23 June 2025
Research shows that an oxalate-rich diet may lead to calcium oxalate kidney stones forming.14
Moderation is key: The recommended serving size for raw almonds is 1 ounce, which equals about 23 almonds.2 Almonds are nutrient-dense and calorie-dense, so the serving size is relatively small.
—Brittany Lubeck, Verywell Health, 9 June 2025
People at a higher risk for calcium oxalate kidney stones may want to limit their beet intake, but otherwise, enjoy experimenting with these in slightly sweet and savory recipes.
—Lauren Panoff, Verywell Health, 30 May 2025
People with kidney stones are often asked to follow a diet low in oxalates, substances that bind with calcium in the urine, leading to calcium oxalate kidney stones.
—Jillian Kubala, Health, 27 Feb. 2025
The National Kidney Foundation website has free information regarding calcium oxalate stones and following a low-oxalate diet.
—Jamie Johnson, Verywell Health, 15 Jan. 2025
To reduce your risk of kidney stones: Avoid high-oxalate foods: These include foods like spinach, chard, rhubarb, potatoes, beets, bran, chocolate, and nuts that contribute to the formation of calcium oxalate stones.18
Cut back on sodium: Sodium contributes to stone formation.
—Kashif J. Piracha, Verywell Health, 1 Jan. 2025
According to a 2021 review in Current Urology Report, males are more likely than females to have calcium oxalate stones, which are far harder than other types of kidney stones and less likely to break up.
—Jay N. Yepuri, Verywell Health, 21 Oct. 2024
Individuals with a history of calcium oxalate kidney stones should exercise caution when eating chia seeds.
—Amy Brownstein, Ms, Rdn, Verywell Health, 9 Sep. 2024
Cite this Entry
“Calcium oxalate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/calcium%20oxalate. Accessed 22 Jul. 2025.
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