Blood clots are among the most feared medical emergencies, and for good reason. They can lead to heart attacks, strokes and death. But not all clots are dangerous. In fact, clotting is a natural and ...

A bruise forms when small blood vessels under the skin break after an injury, causing blood to pool and discolour the area. While most bruises are harmless, deeper injuries can sometimes lead to blood ...

If you've ever accidentally sliced yourself on a broken glass or a piece of paper, you may have noticed that the bleeding can be hard to stop. Scientists have long wondered how the cascade of events ...