“Left vs. Right= non vax vs. VAX,” read the post, which also featured two bags of what appeared to be differently red-hued bags of blood that looked “like a bag of blood clots.” Some users used the ...

We all know blood is red. But not all red blood is created equal. The exact shade of your blood can actually tell you a lot about what’s happening inside your body. And while you might not spend much ...

False claims that the coronavirus vaccines are harmful have circulated on social media for months. Now, some are claiming the shots change more than just one's likelihood of getting seriously ill. A ...

Period blood color can change from bright red to dark red, pink, or brown at different points during menstruation, though it's not typically an indicator of your overall health. Color can change with ...

Blood can change color during menstruation, ranging from bright red to pink to brown. If you drop trou on your period and see anything but red, try not to panic. Period blood isn’t always red, and ...

In a rare medical case, a man's blood became so thick with fat that it turned a milky color and had to be manually drawn out by doctors to save his life. The case report, published in the Annals of ...

As an astrobiologist, I often get asked how aliens would look. What people usually mean by “aliens” are complex, animal-like aliens—often humanoid in form. From the natural history of life on our own ...