First of all, it is important to understand the danger of anemia itself to men. The most common form of anemia is general weakness, pale skin and mucous membranes, and severe anemia can lead to rough skin, lack of luster or ulcer formation. The most serious case of anemia is the development of anemic heart disease, mainly due to long-term heart overload and insufficient oxygen supply, thus leading to anemic heart disease. The development of anemic heart disease is followed by changes in heart rate, such as palpitations, increased heart rate, and also arrhythmias and cardiac insufficiency. In addition, symptoms such as rapid breathing and difficulty in breathing can occur, and it can also cause indigestion and reduced digestive function. Male anemia can affect the secretion of testosterone and diminish male characteristics if it is chronic. The main thing is to identify the cause of anemia to prevent missing certain serious diseases, for example, male patients with iron deficiency anemia, especially the elderly, must pay attention to check whether there is bleeding in the digestive tract and pay attention to exclude peptic ulcers or malignant tumors of the digestive tract. Therefore, for male patients with iron deficiency anemia, it is important to clarify the cause of the disease to prevent missing serious diseases.