Learn what different shades of blood mean and how they signal changes in your health or potential medical issues.

One complication of peptic ulcers is bleeding caused by the ulcers breaking blood vessels. These ulcers can result in black or tar-like stools. Dark brown or black stool or bright red blood on ...

A Walsall father who ignored his bowel cancer symptoms is urging others to get clued up on the signs and symptoms of the ...

Darker red blood in the stool usually means bleeding in the higher part of the colon. Dark or tar-like stool can also indicate bleeding in the stomach. Your healthcare provider may want to run ...

Blood may appear black after exposure to oxygen in your uterus — this is completely normal. Implantation, an object left in your vagina, miscarriage, or an STI can also cause black blood.