Eat a balanced and diversified diet. Eating duck blood vermicelli all the time is not good for your health. Duck blood is good to eat in winter, but in the process of making vermicelli, alum is often added to solve the problems of sticking and breaking. The main component of alum is potassium aluminum sulfate, which contains more aluminum. Therefore, eating too much vermicelli will lead to an increase in aluminum intake in the body. The hazards are as follows: aluminum is not an essential element for human body. Long-term high-dose intake of aluminum will lead to its accumulation in the body and bring a series of diseases. 1. Many experiments at home and abroad have confirmed that aluminum has toxic effects on brain nerves, which will interfere with people's consciousness and memory function and lead to Alzheimer's disease. 2, pregnant women consume too much aluminum, which will shrink the ovaries and cause fetal growth stagnation. 3, aluminum can also cause cholestasis of liver disease, resulting in osteomalacia, causing hemocyte hypopigmentation anemia. 4. In recent years, many studies have confirmed that aluminum may cause damage to antioxidant system and genetic material DNA. Causes of harm: Some studies believe that aluminum will interfere with the absorption of copper, zinc, manganese, selenium and other elements by human body. When the levels of copper, zinc, manganese and selenium decrease, the human body will produce a large number of free radicals that are harmful to health.