A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body," according to American Red Cross.

Recent findings have underscored that individuals with O blood type face an increased risk of death from trauma. This ...

WAUSAU, Wis. (WSAW) - The Wausau Community Blood Center says there is a critical need for Type O blood throughout the country. The American Red Cross says Type O-Negative blood is the most common ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Ever wondered why that one friend gets the stomach flu almost every year, while the rest of your friends ...

Not to B-negative, but your blood type could offer a clue to your risk of having a stroke before 60. “The number of people with early strokes is rising,” said Dr. Steven J. Kittner, co-principal ...

Ever wondered why that one friend gets the stomach flu almost every year, while the rest of your friends are totally fine? Or why your partner never seems to contract the illness, even when you do?

A new blood test was found to detect colon cancer with more than 80% accuracy — and to rule it out for 90% of healthy people. The results were presented at the 2025 American Society of Clinical ...

Blood draws for several kinds of diagnostic tests require you to fast for several hours. Eating or drinking anything besides water can skew the results, leading to you needing to be retested. You may ...