Low hemoglobin content of red blood cells is a sign of anemia, which often leads to fatigue, weakness, dizziness, head swelling, unresponsiveness, lethargy, and even other unresponsiveness. The hemoglobin of red blood cells is synthesized by iron and protein, so you can increase iron-rich foods in your diet, such as pig liver, egg yolk, pig blood, lamb blood and other iron-rich foods. In addition, we should pay attention to increase the quality of protein, high-quality protein from beef, tenderloin, eggs and other foods. The synthesis of hemoglobin requires folic acid, vitamin B12 and vitamin C. Therefore, you can increase the intake of folic acid, vitamin B12 and vitamin C to effectively improve the phenomenon of low hemoglobin content.