Nowadays, they are all unpaid blood donations, can donating the right amount of blood really help go

The total blood volume of the human body accounts for about 8 of the body weight, and a person weighing 50 kg has about 4000 ml of blood in the whole body. Donating 200 400 ml of blood at a time accounts for only 5 10 of the total blood volume in the whole body. The practice of large blood donations at home and abroad for many years has shown that such a blood donation has no adverse effect on the blood circulation of the whole body.

Whether a person donates blood or not, his blood is always constantly metabolizing. That is to say, all kinds of cells in the blood are aging and dying all the time, and at the same time, they are constantly regenerating and replenishing, so as to maintain the physiological balance and function of the blood. For example, the red blood cells in the blood need to be replaced every 4 months.

In addition, the blood of the body is stored in the liver, spleen and other organs, and whenever a small amount of blood is lost, the stored blood will be quickly replenished into the blood circulation. The hematopoietic organs in the body will produce new blood to compensate for storage within a few minutes to a few hours, thereby maintaining the homeostasis of the total blood volume in the body.

Symptoms of hypovolemia can occur only when volume loss is greater than 20, and it is safe to donate 200 400 ml of blood at a time at a specified time.

The factors that cause discomfort in individual blood donors include: they do not know much about blood donation, and they are inevitably nervous and even fearful; The blood collection environment is narrow and noisy, the air is dirty or the service attitude of the staff is not good, etc., which increases the boredom and unpleasantness of blood donors; Blood donors have an empty stomach, are not resting well, or see others react to symptoms that trigger their own subjective feelings. Common symptoms include dizziness, nausea, paleness, sweating, palpitation, shortness of breath, and weakness of limbs.

However, all these symptoms are not a disease, but only a transient physiological reaction, which will disappear quickly with a short rest and some symptomatic treatment, and will not leave any sequelae. <>

Some theories suggest that donating blood can promote blood regeneration, reduce blood viscosity, etc. Unfortunately, there is no professional literature that can adequately explain this. It has been pointed out in the literature that some friends will have some adverse reactions, such as dizziness, fatigue, nervousness, etc., after donating blood.

But at the same time, it also shows that these symptoms are generally not directly related to blood donation itself.

Of course, before and after donating blood, you should pay attention to maintaining a healthy routine and paying attention to nutritional supplements. This is not only to ensure the quality of the blood source, but also to ensure the recovery of the body after blood donation. Shouldn't girls have a period and pay attention to a few days off?

To sum up, there is no particular harm to donating blood, but it is not good for the body, and the more the merrier.

If you have to talk about the risks of donating blood, donating blood is the same as injections, and the operation itself will cause injection wounds and have the risk of infection. However, the probability of infection is very, very low when donating blood in a regular blood donation unit.

If you have been to the hospital for intravenous drips, you know that the same is true for intravenous drip equipment. The first is the blood collection kits, and the blood packets are all disposable. The production process of these injection tools is strictly controlled, and they are also destroyed in a centralized manner after use.

The collected blood also has a professional storage, transportation and testing link to ensure the safety of those who need it.

As for saying that it is not good for the body, why donate blood?

It may be that your blood donation may save some desperate child, or someone you have never met. Perhaps, it saved a family.

When you need to use blood one day, of course, you want someone to lend a hand. <>

Unpaid blood donation is a symbol of responsibility and obligation, according to the individual's physique, choose unpaid blood donation, you can protect your health through unpaid blood donation, and it is also good for health, many people do not know what the benefits of unpaid blood donation are, let's popularize knowledge for everyone.

Good for your health

1.Blood donation reduces blood viscosity. Donating blood reduces coronary heart disease.

2.The results of the study show that blood donation has a good effect on the cardiovascular and cerebrovascular system, and unpaid blood donation has a good positive and preventive effect on reducing the infiltration of cardiovascular disease, and is good for cardiovascular prevention.

3.Blood donation can reduce the incidence of cancer, iron is one of the indispensable elements of the human body, but if the iron is too high above 10% of the normal value, the risk of cancer increases. The only way to do this is by removing iron from the blood, so encouraging people to donate blood for free can reduce the risk of cancer.

4.Blood donation can purify people's hearts, unpaid blood donors use their own blood donation to continue and save the lives of others, and it can also achieve the effect of purifying the soul, which has certain benefits for health.

You can enjoy free blood

1.Blood donors who have donated less than 800 milliliters of blood in total, and who have used blood clinically within five years from the date of blood donation, can use blood for free according to three times the amount of blood donated by Huiqing; Unpaid blood donation can be counted from the date of blood donation, and after five years, the cumulative amount of blood donated for clinical use is the same as the free blood treatment.

2.Blood donors who donate more than 800 milliliters of blood can enjoy free clinical blood for life.

What are the benefits of unpaid blood donation? Not only can it protect the cardiovascular system, but it can also reduce the pre-incidence rate of cancer, and it can also use blood for free, which is very helpful for health and later life.