Is blood donation really harmful to the body?

First, it can prevent and alleviate hyperviscosity Scientists have used hemorheology and hemodynamics to study the relationship between blood and blood donation, and found that insisting on long-term appropriate blood donation, especially the single donation of red blood cells and platelets and other formed components, can significantly reduce blood viscosity, speed up blood flow, and improve cerebral blood flow, so as to alleviate or prevent hyperviscosity, so that people feel relaxed, clear-headed, and energetic. Second, it can prevent and reduce the occurrence of cardiovascular and cerebrovascular diseases An expert in Qingdao has conducted a controlled study on blood rheology on 127 multiple blood donors, 87 patients with hypertension, and 60 patients with mechanical and bloody stroke, and the results show that blood donors have a positive effect on reducing the occurrence of cardiovascular and cerebrovascular diseases; In a Finnish study of 278 men aged 42 to 60 years, those who had donated blood were 86 per cent less likely to develop coronary heart disease after five years than those who had not. In another group of studies, 1532 people who donated blood 1 or 2 times were followed up and observed, and the results showed that only one person had acute myocardial infarction, and the incidence rate was significantly higher than that of the blood donation group among 2306 people who donated blood during the same period. A study by a cardiovascular disease research group in the United States has shown that the risk of cardiovascular disease in blood donors (men) is only 1 2 in non-donors over a 3-year period.

3. Blood donation in men can reduce the incidence of cancer Low levels of iron in the body are prone to iron deficiency anemia and slow movement, and too high is counterproductive. Cancer International has reported that iron levels in the body above 10% of normal values increase the risk of cancer, and a moderate amount of blood donation can prevent cancer. The article also mentions that women lose a certain amount of iron due to blood loss during the menstrual cycle, so no significant relationship between iron content in women and the development of cancer has been found.

Fourth, it can promote and improve mental health A large number of studies have shown that healthy emotions can communicate with the brain and other tissues and organs through the nervous, humoral and endocrine systems, so that they are in a good state, which is beneficial to the enhancement of human immunity and resistance. Blood donation is a noble act to save people's lives, while helping others and being kind to others, it also purifies their spirits, their souls are in crisis, and their work and life are more fulfilling. Those who do good deeds do good deeds, in fact, they help themselves at the same time, which is an important element of health and longevity.

Fifth, it can prolong life There have also been foreign scholars who have conducted prospective controlled studies on 332 people over 66 years old (blood donors) and 399 people of the same age and gender (non-blood donors), and the results show that: The average life expectancy of the blood donation group is years, which is higher than the average age of the non-blood donation group; The survival rate was 67% in the donor group, which was higher than 40% in the non-donor group; The mortality rate was 33% in the blood donation group, which was higher than the 60% in the blood donation group.

As long as you are in good health and donate the right amount of blood, it will not affect your body and cause harm.

To summarize the disadvantages of blood donation that are hotly discussed on the Internet, it mainly focuses on the worry of contracting infectious diseases when donating blood, in fact, this is a completely unnecessary worry, because the needles and blood bags used in blood collection and supply institutions across the country are disposable medical consumables that have been strictly tested and qualified by the state, and there are strict operating procedures and requirements for blood collection.

Blood donation can promote blood metabolism, which is beneficial, but you can't donate too much at a time, about 200 400ml, and donating blood more times will be addictive, and at a certain time, you will feel that your arm will swell if you don't donate blood.

If you are over the age of 18, you can donate blood, donating blood can increase your own metabolism and also help others.

The body may become weak after donating blood. Do less strenuous exercise