As per a 2020 research study published in the American Heart Association journal, individuals with blood group A and B were at higher risk of developing thromboembolic diseases, but lower risk of hypertension, when compared with O-group individuals.

“Individuals with blood group A were at higher risk of developing hyperlipidemia, atherosclerosis, and heart failure compared with blood group O, whereas individuals with blood group B were at higher risk of myocardial infarction compared with individuals with blood group O,” the study found.

Blood group A was associated with a higher risk of heart failure, atherosclerosis, hyperlipidemia, atopy, an increased risk of sleep apnea.

“In addition to an increased risk of thromboembolic diseases and hypertension, blood group B was associated with an increased risk of myocardial infarction in comparison to blood group O,” it found.