Conclusion Your blood’s color tells a story about what’s happening inside your body. Normal, healthy blood ranges from bright scarlet to deep crimson, depending on its oxygen content.

Type A personality? Some blood transfusion recipients have reported changes in their mood, behavior and even memories after undergoing the procedure. Researchers from the University of Geneva ...

Artificial Blood That Could Work for All Blood Types in Trials Published Jun 02, 2025 at 8:22 AM EDT Updated Jun 02, 2025 at 9:24 AM EDT By Jasmine Laws ...

Talk about a lonely hearts club. An unnamed woman from Guadeloupe has the rarest blood type on earth, to the extent that she’s only compatible with herself.