Eat fermented foods and drink probiotic beverages to bring your inner ecosystem back into balance. 1  Use the Principle of 80/20 at every meal. 2  Warm up your digestion with cooked foods. 3  Add herbs and spices to improve digestion. 4  Drink warm ginger tea 20 minutes before a meal to benefit digestion and relieve nausea.
A black hairy tongue is caused by too much bacteria or yeast growth in the mouth. The bacteria build up on tiny rounded projections called papillae. These lie along the surface of the tongue. Instead of shedding as they normally do, the papillae start to grow and lengthen, creating hair-like projections.
Diagnosis of black hairy tongue includes eliminating other conditions that may cause a similar appearance to the tongue, such as: 1  Normal variations in tongue color (pigment) 2  Poor oral hygiene. 3  Foods or medications that have stained the tongue.  Fungal or viral 1  infections. Inflammation of the lining of the mouth.