The liver is situated on the upper right side of the abdomen, just below the diaphragm.
It is the largest internal organ of the human body and weighs around 1.5kg in the average adult.
Blood from the digestive system must first filter through the liver before it travels anywhere else in the body.
The principal roles of the liver include removing toxins from the body, processing food nutrients and helping to regulate body metabolism. A range of conditions can prevent the liver from performing its vital functions.