Many people wonder what the most common blood group in the world is. Blood groups are an important aspect of our physiology because they play a key role in helping doctors during blood donation, surgery, and other emergencies. People have different blood types, which can be A, B, AB, or O, and can be Rh-positive or Rh-negative. Some blood groups are very common, while others are very rare. In India and even in many other countries, O positive is the most common blood group. There is a direct relationship between the frequency of a blood group and the ease of blood donation. In this article, we discuss the common blood groups in various countries across Asia and around the world.
The O positive phenotype (or blood type) is the most common blood group in the entire world. This blood group is even found in millions of people in different countries. Because this blood type can be given to other blood groups during emergencies, it is in demand by doctors and hospitals. Human blood can be divided into four groups: A, B, AB, and O, and can be positive or negative; however, positive blood groups are more common than negative blood groups.
The blood group most prevalent among Indians is also O+ (around 35-40%). This means at least 3 in every 10 Indians are O+. Following O+, the next most frequently occurring blood group in India is B+. O+ and B+ are also the most common blood groups in the world and in Western nations. In India, the average percentage of blood groups by type is as follows: O+ (37%), B+ (32%), A+ (22%), AB+ (8%). All negative blood groups in India are difficult to find. O- is found in only 1 to 2% of the Indian population.
Blood banks often have a larger supply of the most common blood group because more people have it. O+ is the most common blood group in almost all Asian countries. However, in South Asian countries like India, Pakistan and Bangladesh, B+ also records high occurrences. A+ is the most dominant blood group in East Asian countries like China, Japan, and South Korea. Among of all blood groups in Asia, O+ is the most common. Blood groups are inherited from parents through genes, and different regions of the world have different gene pools.
The most common blood group varies slightly from one country to another. Worldwide, O positive is again the most common blood group. Around 38% to 40% of the world population has O positive blood. In many European and American countries, A positive is also very common. But globally, O positive stays at the top because it is found on almost every continent. This is why blood banks always ask for O positive donors. It helps many patients during surgeries, accidents, and emergencies.
Knowing the most common blood group can be useful when discussing blood compatibility. Blood group percentages are different in every country. The table below shows the percentage of different blood groups in popular countries around the world.
COUNTRY | O+ Blood Type | A+ Blood Type | B+ Blood Type | AB+ Blood Type | O- Blood Type | A- Blood Type | B- Blood Type | AB- Blood Type |
INDIA | 32.53% | 21.8% | 32.1% | 7.7% | 2.03% | 1.36% | 2% | 0.48% |
RUSSIA | 36% | 31% | 19% | 2.1% | 6% | 4% | 1% | 0.9% |
UNITED KINGDOM | 35% | 30% | 8% | 2% | 13% | 5% | 2% | 1% |
UNITED STATES | 37.4% | 35.7% | 8.5% | 3.4% | 9.8% | 4.1% | 1.5% | 0.6% |
CANADA | 39% | 36% | 7.6% | 2.5% | 7% | 6% | 1.4% | 0.5% |
AUSTRALIA | 38% | 32% | 12% | 4% | 7% | 6% | 2% | 1% |
CHINA | 34% | 27.6% | 28.9% | 8.4% | 0.4% | 0.25% | 0.2% | 0.15% |
JAPAN | 29.9% | 39.8% | 19.9% | 9.95 | 0.15% | 0.2% | 0.1% | 0.05% |
NEW ZEALAND | 39% | 31% | 10% | 2% | 10.9% | 6% | 1% | 0.1% |
Understanding the most common blood group can increase awareness about the importance of blood donation. O positive is the most prevalent blood type in India, Asia, and the world. The B positive blood type is also common in many Asian countries. The distribution of blood types changes from region to region because of family blood type distributions and population migration over many years.
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The most common blood type is O positive (O+). After that, A positive (A+) and B positive (B+) are the most common. For example, in India, blood type B positive (B+) is common too. As a result, blood type O positive (O+) and B positive (B+) are common in blood banks.
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