Here are 10 things we all need to know about our blood type

of cortisol and adrenaline.
Antigens in the blood: Antigens differ according to blood type. For example, blood type A has A antigens and B antibodies; in blood type B, there are B antigens and A antibodies. In blood type AB, there are A and B antigens, but no antibodies. However, with blood type O, there are no antigens, only two types of antibodies: A and B.
Blood type and weight gain: Depending on your blood type, you tend to gain weight or have a flat stomach. With blood type O,