A large number of scientific studies have proved that blood donors not only contribute their love to the society, but also improve their physical condition and make "investment" for their health.
Scientists used hemorheology and hemodynamics to study the relationship between blood quality and blood donation. It is found that regular and moderate blood donation, especially a single donation of tangible components such as red blood cells and platelets, can significantly reduce blood viscosity and increase cerebral blood flow after speeding up blood flow, thus alleviating or preventing hyperviscosity, making people feel relaxed, clear-headed and energetic.
Blood donation also plays a positive role in reducing the occurrence of cardiovascular and cerebrovascular diseases. A research team in Finland investigated 2682 men aged 42-60. Among them, the proportion of people who donate blood at least 1 time in two years who have acute myocardial infarction in five years is 86% lower than those who don't donate blood. A study by a cardiovascular research group in the United States also shows that within three years, the risk of cardiovascular disease among blood donors (men) is only half that of non-blood donors.
Male blood donation can also reduce the incidence of cancer. International Cancer reports that if the iron content in the body exceeds 10% of the normal value, the probability of cancer will increase. Proper blood donation can regulate the iron content in the body and prevent cancer. The article also mentioned that young and middle-aged women lose a certain amount of iron in their bodies due to menstrual blood loss, so the iron content in these women has no obvious relationship with the occurrence of cancer.
Studies have shown that people who donate blood regularly are less prone to aging than those who don't donate blood, and have strong tolerance and self-regulation function in unexpected situations. Some scholars have made a prospective comparative study of 332 people over 66 (blood donors) and 399 people of the same age and sex (non-blood donors). The results showed that the average life expectancy of the blood donation group was 70. 1 year, which was higher than that of the non-blood donation group (67.5 years). Once an accident happens, the survival rate of the blood donation group is 67%, which is higher than that of the non-blood donation group (40%). From the above analysis, the life expectancy of blood donors will be prolonged because their blood metabolism is more vigorous than that of non-blood donors.
A large number of studies show that healthy emotions can communicate with the brain and other tissues and organs through the nervous system, body fluids and endocrine system, so that they are in a good state, which is conducive to the enhancement of human immunity and resistance. Blood donation is a noble character to save lives. Blood donors are in the best mood while helping others and being kind to others, which is beneficial to their health.
Male blood donation has many advantages.
Some studies believe that if middle-aged men donate 550 ml of blood every year, the risk of heart disease will be reduced by 86%. According to this study, when men are over 40 years old, due to the reduction of physical activity and the improvement of living standards, body fat tends to accumulate, and many people's blood lipids are at a high level for a long time. Regular blood donation can reduce the viscosity of blood, which also reduces the hidden danger of arteriosclerosis.
International Cancer reports that when the iron content in human body exceeds 10% of the normal value, the probability of cancer will increase, and the incidence of cerebral thrombosis and myocardial infarction will also increase. Proper blood donation, especially for men, can increase the iron content of red blood cells in the blood. The content of iron in donated blood will be reduced appropriately, reducing the occurrence of the above diseases.
Through a large number of investigations, scientists have found that young women are less likely to suffer from stroke, heart disease and tumor than men, but the chances of suffering from these diseases will increase with age. Through the analysis of the reasons, it is believed that the reduction of monthly menstrual flow of young and middle-aged women accelerates the metabolism of red blood cells, promotes bone marrow hematopoiesis, increases the number of newborn red blood cells in the blood, and transports more oxygen and nutrients to all parts of the body, thus reducing the risk of heart disease.