The document discusses the connection between the oral microbiome and systemic health. It explores how the hundreds of bacteria in the mouth, known as the oral microbiome, could impact overall health and disease. Recent research shows the oral microbiome may play overlooked roles and could be linked to conditions like cardiovascular disease, rheumatoid arthritis, and more. Personalizing care based on each person's unique oral microbiome is an area that startups are exploring to improve diagnosis and treatment of autoimmune diseases.