Non-O blood types (A, B, and AB) are generally associated with a higher susceptibility to various diseases compared to blood type O.
Increased Risk in Non-O Blood Types
Several studies indicate a correlation between non-O blood types and an increased risk of specific health problems. This isn't to say that having a non-O blood type causes these diseases, but rather that individuals with these blood types may have a statistically higher chance of developing them.
- Cardiovascular Disease: People with A, B, or AB blood types face a heightened risk of developing cardiovascular diseases. Penn Medicine confirms this increased risk.
- Cancers: Certain cancers, like stomach cancer, show a stronger link with blood types A and AB. WebMD and Northwestern Medicine highlight this increased risk for specific blood types. The ABO gene's potential role in other cancers, including lung and breast cancer, is also being investigated. Penn Medicine
- Other Diseases: A range of other disorders, such as hypertension, obesity, dyslipidemia, and diabetes, are also more prevalent in individuals with non-O blood types. NCBI
- Infectious Diseases: The severity of certain infectious diseases, such as cholera and E. coli diarrhea, can vary depending on blood type. Individuals with type A blood may experience more severe symptoms in these cases. Washington University School of Medicine, Washington University School of Medicine Additionally, studies indicate that Blood group A is linked to a higher risk of COVID-19 infection. Hematology.org
Blood Type O and Disease Resistance
Conversely, individuals with blood type O generally show more resistance to several diseases, although exceptions exist, such as H. pylori-associated gastrointestinal diseases. PubMed
It's crucial to remember that blood type is just one factor influencing health. Genetics, lifestyle, and environmental factors all play significant roles in disease development. The information above presents correlations observed in studies, not definitive causal relationships.
