Which Blood Group Has the Strongest Immunity? Experts Explain

By Viralposts Last updated Nov 4, 2025

When it comes to immunity, research has shown that blood group O tends to have certain advantages over other blood types. People with blood group O are often considered to have stronger natural immunity to some infections, especially certain viruses and parasites.....CONTINUE READING THE FULL STORY HERE

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For example, during studies on viruses like norovirus and even COVID-19, blood type O individuals were found to be less likely to get severely infected compared to those with A, B, or AB blood types. This could be due to the natural antibodies present in type O blood.

Blood group O individuals have anti-A and anti-B antibodies, which may offer extra protection against some pathogens. These antibodies may help the immune system recognize and fight off invaders that mimic A or B antigens.

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Also, people with blood type O are less likely to experience clotting issues, which may indirectly support healthier immune responses in certain diseases.

However, it’s important to understand that immunity is not solely determined by blood type. Lifestyle, nutrition, genetics, age, and underlying health conditions play a much larger role.

While blood type O may offer a small edge in immune strength, everyone can boost their immunity by eating well, staying active, managing stress, getting enough sleep, and keeping up with vaccinations.