Rule # 33 Eat some foods that have been predigested by bacteria or fungi

Many traditional cultures swear by the health benefits of fermented foods - foods that have been transformed by live microorganisms, such as yogurt, sauerkraut, soy sauce, kimchi, and sourdough bread. These foods can be a good source of vitamin B12, an essential nutrient you can't get from plants. (B12 is produced by animal and bacteria). Many fermented foods also contain probiotics - beneficial bacteria that research suggests improve the function of the digestive and immune systems and, according to some studies, help reduce allergic reactions and inflammation.