Autoimmune diseases such as type 1 diabetes, rheumatoid arthritis, and multiple sclerosis occur when the immune system mistakes the body's own proteins for those released by invading pathogens. The immune system has strategies for filtering these autoimmune cells out of circulation; however, this filter can malfunction due to age, genetic predisposition, disruption of the gut barrier and gut microbiota, or other environmental exposures. In this episode of the Aliquot podcast, we'll discuss autoimmunity and how childhood exposure to germs, dietary fiber intake, and fasting can build a healthy and balanced immune system.