Indian research has found that drinking black tea three times a day for a year could help prevent the development of oral cancer in subjects with leukoplakia, a disease that causes white spots to appear on mucous membranes on the tongue and in the mouth.

Oral cancer is the single most common malignancy found in Indian men and the third most common among Indian women. The study also found a significant decrease in micronuclei frequency and chromosomal aberrations. (JEnvPathToxOncol.v24.i2.70).