Your body has a remarkable way of signaling when something’s off—and your tongue can be one of the most revealing indicators. Changes in color, texture, or coating on your tongue may offer valuable clues about your overall health, including vitamin deficiencies, infections, or other medical conditions.
While a change in appearance doesn’t always signal a serious problem, it’s helpful to know when you should consult a healthcare professional. Below are eight common tongue signs and what they may mean for your health—based on reputable medical sources.
1. Bright Red or “Strawberry” Tongue
A tongue that appears bright red, sometimes referred to as “strawberry tongue,” may indicate a vitamin deficiency, particularly vitamin B12 or iron. These nutrients are essential for healthy red blood cell production and nerve function. A deficiency can lead to a smooth, swollen tongue and discomfort when consuming hot or spicy foods.
Other possible causes include:
Scarlet fever (if accompanied by a sore throat and fever)
Kawasaki disease in children
In rare cases, an allergic reaction
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