76:4.7

The body cells of the Material Sons and their progeny are far more resistant to disease than are those of the evolutionary beings indigenous to the planet. The body cells of the native races are akin to the living disease-producing microscopic and ultramicroscopic organisms of the realm. These facts explain why the Urantia peoples must do so much by way of scientific effort to withstand so many physical disorders. You would be far more disease resistant if your races carried more of the Adamic life.