Why do things taste bad to one person but good to another? It could be a clue to someone’s health. If you were dropped in nature, two thirds of what you would eat would be bitter. This is natural. Yet most people in the modern world avoid bitter altogether, thinking it is disgusting. But it’s actually necessary for health. Bitter helps digestion, nutrient absorption, cleans the liver and repels parasites. Most people choose only sweet foods and this is where the problem begins.