1. Calcium supplement The content of calcium in black currant raisin is especially high, and it is easy to absorb. It is an ideal food for children and the elderly. 2. Treatment of arrhythmia There is a lot of potassium salt in the black currant, which can improve the excitation of human muscle, especially for the human heart muscle. It can promote the excitation of the heart muscle in the normal range, thus reducing the occurrence of arrhythmia symptoms. 3. Prevention and treatment of heart disease Blackcurrant raisin is an important food to prevent the occurrence of heart disease, because it contains a lot of mineral magnesium, which can accelerate the circulation of human blood, reduce the occurrence of high blood pressure, in addition, it has a very good protective effect on human heart, people will greatly reduce the incidence of heart disease after absorbing a large amount of magnesium. 4. Cancer prevention There are a lot of flavonoids in black currant raisins, which can not only reduce the appearance of human arteriosclerosis, but also reduce the appearance of anti-oxidation reaction, make the formation of cancer cells produce a great resistance, and play the role of preventing cancer and delaying aging. 5. Enhance immunity