Vegetables with the highest mineral content.

Introduction: Vegetables are an indispensable food in people's daily diet, rich in various mineral elements. However, many people do not know how to eat vegetables properly. Improper consumption can lead to the significant loss or destruction of these beneficial substances.

Calcium is the mineral element most likely to be deficient in the human body. Vegetables contain oxalic acid, which can hinder calcium absorption. However, due to their high consumption, vegetables remain an important source of calcium. For vegetables high in oxalic acid, blanching them in boiling water before consumption can remove most of the oxalic acid, thus preventing interference with calcium absorption. Based on the calcium content in fresh vegetables, those with over 200 milligrams of calcium per 100 grams are considered high-calcium vegetables, such as shepherd's purse, radish leaves, and potherb mustard. Vegetables with 100-200 milligrams of calcium per 100 grams are rich in calcium, such as edamame, amaranth, rape stalk, Malabar spinach, and kale.

It is well-known that hypertension is closely related to salt intake. In daily life, reducing salt not only involves using less salt when cooking but also choosing appropriate low-sodium vegetables is a good method for controlling salt intake. Vegetables with over 100 milligrams of sodium per 100 grams are considered high-sodium, including fennel, crown daisy, celery stalks, kelp, and seaweed; less salt should be used when cooking these.

Conversely, potassium has the effect of lowering blood pressure. Patients with hypertension should consume more potassium-rich vegetables while following a low-sodium diet. Vegetables with over 250 milligrams of potassium per 100 grams include potatoes, taro, spinach, radish leaves, bamboo shoots, and snake beans. Additionally, soaking vegetables in water or boiling and discarding the cooking water will reduce their potassium content.