Blood

What is blood?

Blood is an essential life force, constantly flowing and keeping your body working. Blood is mostly fluid but contains cells and proteins that literally make it thicker than water.

Blood has four parts: Red blood cells, white blood cells, platelets and plasma. Each part has specific and important tasks, from carrying oxygen to carrying out waste products. blood also acts like a kind of health barometer. Unusual blood test results may be the first sign of changes that could point to serious illness. This article focuses on how blood works and conditions that affect blood health.