Today, we all understand the importance of blood type, but that's actually a relatively recent discovery. Before the 1900s, doctors believed all blood was the same, which unsurprisingly led to a lot ...

Meghan Markle has shared lighthearted insights about her "over-achieving" nature while joking about her A positive blood type. During a chat with a friend on her podcast, the Duchess of Sussex got ...

Blood – everyone's got it. In fact, an adult who weighs between 150 and 180 pounds has around 1.2 to 1.5 gallons of blood in their body. This makes up approximately 10% of an adult’s weight. Blood ...