By Admin 
Blood donation is called Mahadan, because it saves the lives of countless people. This is the reason that World Blood Donor Day is celebrated on 14 June every year in the whole world. Have you ever thought how many units a person can donate blood at a time? Does it have any limit then why is it fixed? & Nbsp;
how much blood can be blooded at once?
According to the World Health Organization (WHO) and various blood banks, a healthy person can donate 450 ml (about half a liter or a pint) at a time. This is usually called a unit. This quantity is considered standard at global level. However, there may be a little difference in some countries. & Nbsp;
In which country how much blood donating rules?
450 ml in Canada means about 2 cups, then a unit in America means 460-500 ml. At the same time, there is a standard of donating 350-450 ml of blood in India, which depends on the weight and health of the donor. 200 to 450 ml of blood can be donated in Japan and Singapore, which is fixed on the basis of the weight of the donor. Apart from this, 5-10 ml of extra blood testing can be taken during blood donate. This quantity is only 8-10 % of the total blood (about 5-6 liters) present in the body of a healthy adult, which is considered safe.
Why can only one unit of blood to blood?
According to experts, it is considered safe to donate a unit (450-500 ml) blood at a time, because there is no serious effect on the donor’s health. Actually, a normal adult has 4.5 to 6 liters of blood in the body, which can vary according to age, gender and weight. Donating a unit of blood is temporarily low in the body, but this decrease is completed with plasma and fluid in 24-48 hours. At the same time, red blood cells (RBC) takes 4-6 weeks in regeneration.
What is the danger of donating more blood?
Many research has revealed that removing more than 15 % at a time can be dangerous, because it can cause symptoms like class 2 bleeding. This can cause dizziness, weakness or unconsciousness. & Nbsp;
Disclaimer: Some information given in the news is based on media reports. Before implementing any suggestion, you must consult the concerned expert.