Redwood Foods versions of these are sold in Holland and Barrett, Asda and wholefoods shops. Gravy granules. Just because you're feeding a vegetarian or vegan doesn't mean they have to have 'vegetarian' gravy (you know, the thin watery stuff that looks like a dissolved vegetable stock cube).
What You Should Do. Brown or Hairy. Brown tongue or hairy tongue is caused by poor diet and, most often, by poor dental hygiene. The area at the back of the tongue catches food debris, and over time, the debris builds up, causing a brown or brown hairy appearance. Almost all foods can potentially cause brown, hairy tongue. Brush your tongue gently with a soft bristle toothbrush or a tongue scraper.
Quick Answer. Smoking cigarettes can cause fingers and teeth to stain a yellow-brown color, explains Johnson & Johnson. It is the tar rather than the nicotine that is responsible for the discoloration. Liver problems can also result in a yellowing of the skin called jaundice, notes HealthTap. Continue Reading.