The tongue is the first part of the long digestive tract, so what the tongue looks like is just an indication of the rest of your digestive system and your liver in particular - if you could stand changing your diet you would change the colour of your tongue - not drinking milk, not eating fried foods, drinking plenty of water and freshly squeezed fruit and vegetable juices would be a great place to start, eating plenty of fresh green vegetables, salads and all types of vegetables would help too - fresh fruits will also boost your immune system - even if you only did this for a week you would be amazed at the difference - not only in the appearance of your tongue but also the way you felt - you would feel much better altogether!...