Red blood is the exception, not the rule. Evolution has painted it green, purple and white in animals that push physiology ...

Bright red period blood is common at the start of your period and indicates blood has passed through your vagina quickly. Orange, gray, or green tinges in period blood can be signs of an STI or other ...

Holly has a degree in Medical Biochemistry from the University of Leicester. Her scientific interests include genomics, personalized medicine, and bioethics.View full profile Holly has a degree in ...

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 ...