Over-sanitization of the environment, including widespread use of antibiotics in everyday items, may hinder access to beneficial microbes necessary for degrading fiber.

“And I think that this probably intersects with sanitation in our environment and the fact that we don't have access to new microbes that might help us degrade the fiber that we actually um you know have lost these microbes and they're in some ways irreoverable without deliberate reintroduction of fiber degrading microbes.”