Beer and Wine Isinglass, a gelatin-based substance derived from fish, is used as a clarifying agent in some beer and wine. Other non-vegan ingredients sometimes used are casein (from milk) and egg whites.

Level 5 vegan Level 5 vegans also avoid all animal-derived products such as eggs, dairy products, meats, fish and seafood, and will also avoid any food products where accidental traces of animal products may feature. They will also avoid leather, gelatin, and some food colourings.

As you read along, you'll find out that most health conditions developed by vegans are related to vitamin B12 deficiency. Without the familiar sources of vitamin B12, certain bodily functions can be disrupted, leading to anemia, gastritis, stroke, Crohn's disease, and Celiac disease.