There are many causes of kidney calculi. Generally, as long as it is not gout stones, you can be jealous and soak black beans. Patients with chronic kidney disease and renal failure symptoms are not suitable to take black beans, because it contains a purine substance, which will lead to the increase of uric acid in patients with renal failure, and friends with gastric ulcer and hyperacidity are not suitable to take vinegar soaked black beans.

Soaking black beans in vinegar can cure vision loss and dizziness, which has miraculous effect. Poor eyesight and dizziness are the biggest pains for desk workers. Because black beans are rich in antioxidant components that are beneficial to the eyes-anthocyanins and vitamin A. Among them, aged vinegar can promote the dissolution of nutrients in black beans and contribute to the efficient absorption of nutrients. Soaking black beans in vinegar can not only help inhibit vision loss, but also effectively treat chronic fatigue, cold syndrome, shoulder pain, high blood pressure and high cholesterol, which are the most common diseases of office workers. At the same time, soaking black beans in vinegar has a good effect on treating and improving eye diseases such as myopia.

The pH value of vinegar (pH value of solution) is 1.5-2.0, which is very close to the pH value of human gastric acid 1.3- 1.8, and has the function of regulating the stomach. The sour taste of vinegar can accelerate saliva secretion and digestion. Acetic acid and citric acid can penetrate food and have strong bactericidal ability. A study on vinegar in Japan pointed out that vinegar contains high amino acids, which helps to inhibit human aging and prevent various senile diseases. Washing your face or taking a bath with vinegar water can soften your skin and enhance your vitality.