Saponins contained in red bean skin are not only rich in potassium, but also have a strong diuretic effect, which can improve the edema of face and feet caused by beriberi and decreased renal function.

How to eat: Red beans are often made into bean paste stuffing, but if you want to reduce swelling, boiling red bean soup is the first choice. Cook with low heat until the amount of soup is only half of the total when adding water.

2.watermelon

Watermelon contains an amino acid called citrulline, which has a good diuretic effect and is also one of the pharmaceutical ingredients for treating kidney diseases. It is also effective for heart disease, hypertension and edema caused by pregnancy.

How to eat: Boil watermelon peel with water for drinking.

3. Cucumber

Cucumber is more than 90% water, and its nutritional value is not high. However, isomangiferin contained in cucumber skin has a good diuretic effect and has been used for the first aid of cystitis and acute nephritis since ancient times.

How to eat: Cucumber can be eaten raw even with its skin. If dried with pedicels and vines and boiled with water, a strong diuretic effect can be obtained. However, people with cold stomach should not eat too much raw cucumber.

4. Carp

Taking carp as a dietary supplement can eliminate edema during pregnancy and promote the smooth secretion of postpartum breast milk. It is also effective for cough, liver disease, dermatosis, gastric ulcer, rheumatism and hemorrhoids.

How to eat: In order to remove the muddy smell from carp meat, you can put carp in clean water for 1 ~ 2 days, and then slaughter and cook it. There are many cooking methods for carp, but no matter which method is chosen, it takes a long time to cook until the bones become soft.

5. potatoes

Potatoes are also called "apples growing in the soil" because of their rich nutrition. They are rich in inorganic salts, and the potassium content in inorganic salts is very high. Potassium can not only help the body to excrete sodium that is retained in the body due to excessive salt, but also promote the body to excrete excess water.

How to eat: In order to make effective use of potassium in potatoes, it is best not to peel potatoes when steaming, baking and boiling them. When stewing potatoes, you might as well have soup together.