Foods with high oxalic acid include: spinach, red amaranth, water spinach, bamboo shoots, and purslane.

1. Spinach

The oxalic acid content is 1333mg/100g, which is the food with the highest oxalic acid content among common food materials. Such a high oxalic acid content combines with the calcium ions we ingest, and most of the calcium ions form a "calcium oxalate" complex. No wonder the elderly and children at home always suffer from calcium deficiency symptoms even if they supplement calcium every day.

2. Red amaranth

Red amaranth is a home-cooked ingredient that many people love to eat. There has been a popular saying among the people: "Amaranth in June is worth beating eggs; amaranth in July is not worth gold." ” argument.

Red amaranth is a food that is very similar to spinach. It is rich in vitamin C, carotene, dietary fiber, calcium, iron and other trace elements. It is a food that is extremely nutritious. But red amaranth is a food with extremely high oxalic acid content. The oxalic acid content is slightly lower than spinach, and it is also a "big oxalic acid consumer".

3. Water spinach

Water spinach is a particularly cheap ingredient and an alkaline ingredient that has many benefits for the human body. It is also affectionately called the "green elf". .

Water spinach is rich in dietary fiber, vitamin C, niacin, calcium, potassium and other trace elements. It is also an antibacterial vegetable and has an excellent effect in relieving "old constipation". Water spinach is also a high-oxalic acid food, with an oxalic acid content of 691mg/100g.

4. Bamboo shoots

Bamboo shoots are divided into spring bamboo shoots and winter bamboo shoots. They have been one of the eight delicacies of the mountains since ancient times and were also a relatively high-end ingredient in ancient times. In the south, both winter bamboo shoots and spring bamboo shoots are common household ingredients that people eat. There has been a saying in Jiangnan that "you can't live without bamboo, and you can't eat without bamboo shoots."

Bamboo shoots are rich in amino acids, dietary fiber, carotene, vitamin B1, vitamin B2, vitamin C, calcium, phosphorus, iron and other nutrients. They are a highly nutritious food. However, both winter bamboo shoots and spring bamboo shoots are "high oxalic acid ingredients" with extremely high oxalic acid content.

5. Purslane

Purslane is a common wild vegetable in the north. It is rich in multiple vitamins, especially carotene, vitamin B, and vitamins It is especially rich in P and vitamin C, and also contains large amounts of amino acids, crude fiber, calcium, phosphorus, iron, potassium and other trace elements. However, no matter how nutritious purslane is, it has a disadvantage, which is the high content of oxalic acid.