A white coating on your tongue could mean that you have a yeast overgrowth.[1] But before you panic about yeast infections like candida, try brushing your tongue properly for a week and then see if the white patches or coating persist.Candida overgrowths often occur when you have been ill and have used antibiotics, or when your immune system is run down. Balancing your gastrointestinal environment with healthy levels of probiotics from fermented foods, good quality natural yoghurt, or a probiotic supplement can be a great way to restore gastrointestinal balance in the digestive tract. If the white patches persist, then see your physician as oral cancer can often start in these areas.
Dr. Banić