What Causes Cracks on the Tongue?

The tongue has long been regarded as a “barometer” of one’s health—any abnormalities on the tongue often signal underlying physical imbalances. For instance, cracks or fissures on the tongue may indicate internal health issues. So, what causes tongue fissures?

What Causes Tongue Fissures?

Under normal circumstances, a healthy tongue appears moist, rosy, lustrous, and relatively smooth. The presence of cracks warrants attention. In traditional Chinese medicine (TCM), such fissures commonly arise from depletion of blood and body fluids. Additionally, systemic inflammation or fever can also lead to tongue fissuring.

When tongue fissures are accompanied by bleeding, it suggests pronounced dryness and deficiency in the body. If the tongue coating appears pale and fine vertical lines cover the entire surface, this typically reflects spleen deficiency. Conversely, a tongue lacking coating, spots, or fissures—and appearing red—indicates yin deficiency with concurrent heat or inflammation, requiring timely regulation and nourishment.

Upon noticing tongue fissures, it is essential to promptly adjust dietary habits: reduce intake of “heat-inducing” foods—such as hotpot and barbecued dishes—which may exacerbate tongue discomfort. Instead, opt for light, easily digestible meals and increase water intake to help alleviate fissuring. Strengthening the spleen and stomach is equally important, as spleen dysfunction can contribute to tongue fissures. Incorporating spleen-strengthening foods—like Chinese yam and millet congee—into daily meals supports digestive health and overall well-being. We hope this information proves helpful to you.