What are the causes of a white tongue?

Food debris: The most common cause so a white tongue is food and bacterial debris building up on it. You can clean your to gue by brushing it or using a tongue scraper every day.

Several: Certain foods can cause a whitish appearance of the tongue as well as certain medications such as antibiotics. Another possibility is the presence of a geographic tongue where you may have white patterns appear. Smoking is also a very common cause.