Anemia is when you have low levels of red blood cells. When this happens, your organs and tissues have a harder time getting oxygen. You may feel fatigue, weakness, and shortness of breath.

Polycythemia vera (PV) causes your bone marrow to make too many red blood cells. You need these cells to carry oxygen around your body, but too many of them can make your blood thicken and form clots.

Polycythemia vera (PV) is a rare blood cancer that causes your body to make too many red blood cells. Extra cells may not sound like a problem, but they are. They thicken your blood, which means ...

Starz Excitement for the upcoming Starz drama Outlander: Blood Of My Blood ... Teaser & First-Look Photos Reveal Flenory Brothers' Struggle In Mexico The large cast also includes Tony Curran ...

Suddenly, there’s a wild card in the Red Sox’ roster-building efforts. Marcelo Mayer had never played a professional game at second base until Tuesday. He’s now logged 13 innings at the ...

The parasites known to cause babesiosis are shown here infecting red blood cells under the microscope. (Image credit: Smith Collection/Gado / Contributor via Getty Images) Typical symptoms of ...

In an early-stage clinical trial, the therapy nearly doubled the expected survival time of young patients. Still, experts caution that more research is needed. Gavin Nielsen was 2 years old when ...

Hunted Labs launches with $3M in pre-seed funding and a $1.79M contract with the Space Development Agency Red Cell Partners, an incubation firm building and investing in rapidly scalable ...

“As an investor you learn that you have to hold your nose, and when there's blood in the streets you have to be buying. It’s an old adage, but it’s not incorrect.” So, what exactly has O ...

No red pixels are in this photo. It turns out our brains are the ones to blame. Our brains have been trained to color correct what we see so that objects remain a consistent color regardless of ...

A recent study by the University of Turku and Aalto University in Finland and Wageningen University in the Netherlands found that nanocellulose dyed with red onion skin ... materials and solar cells ...