Researchers in Iraq and Australia say they have developed a computer algorithm that can analyze the color of a person's tongue to detect their medical condition in real-time — with 98% accuracy.

They don't take up the food colouring. These papillae are the tiny bumps on your tongue that house your taste buds. The more papillae you have, the more taste buds you have and the more sensitive ...

Using a cotton bud, swab some food colouring on to the tip of your tongue; Place a reinforcement ring on your tongue; Count the pink dots within the reinforcement ring.