I have a new story out in National Geographic this week about a growing area of research connecting the gut microbiome—the diverse community of microorganisms that live in our digestive systems—with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), the chronic disease that often occurs after viral infection and has many commonalities with Long COVID. For the story, I talked to Tamara Romanuk and Tess Falor, patient-researchers whose Remission Biome project seeks to understand this connection and push towards potential treatments.