Diabetes can be detected early without any blood test by looking at your tongue. Tongue colour of Pre-diabetics will be – Blueish, Fur will be thick and Fur colour yellow.
For first ever study analyzing the association between tongue colour and diabetes click here
By following Health Tips of One Cure for All Diseases – Pink and healthy tongue colour can be ensured in 15 days.
Tongue Colour is also associated with foul mouth smell.
There is no credible information as to what causes tongue colour to be different. Google search on “how to get rid of white tongue” returned the following result on top – Top web site