If your tongue is white, it’s a clear sign that you’re suffering from…

A white tongue can be a sign of a variety of underlying health conditions. While it is often harmless, it can sometimes signal a more serious problem. The tongue may appear covered in white spots or have an overall white coating due to a buildup of plaque, bacteria, and dead cells. This can be caused by a variety of factors, from minor to more serious health problems.

Common causes of white tongue

Oral candidiasis (thrush)
is a fungal infection caused by an overgrowth of Candida in the mouth. It often appears as creamy-white patches on the tongue, inside of the cheeks, and throat. It is more common in people with weakened immune systems, those taking antibiotics, diabetics, and those who wear dentures.

Dehydration or dry mouth:
When the body doesn’t have enough fluids, saliva production decreases, leading to dry mouth. This allows bacteria and dead cells to build up on the tongue, resulting in a white coating.

Poor oral hygiene
Not cleaning your tongue regularly can lead to a buildup of food particles, bacteria, and dead cells that form a white film on the surface of the tongue.

Leukoplakia
This condition causes thick, white patches on the tongue and inside of the mouth. It’s often caused by chronic irritation—smoking, alcohol use, or sharp teeth. It’s usually harmless, but it can sometimes be a precancerous condition, so you should see a doctor if it doesn’t go away.