Across life on Earth, blood comes in blue, green, purple, even clear. But why? And what makes your blood different from mine? This is the strange world of blood—what it does, why it varies, and why we ...

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 ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. There’s more history in your blood types than you think, ...

Our genetic characteristics can range from our eye color to, in the case of men, being born with a recessive allele which means we get to keep our hair for much longer than those without it. Genetics ...

Can your blood type hold the key to your health?Research suggests it does – and quite extensively so.A study has found a surprising link between blood type and stroke risk, with people carrying one ...