Original sentence: As modern medicine has advanced, terrain theory has been discarded.Béchamp believed that the pH of the body is important, and that an acidic pH will attract germs and an alkaline pH will repel them
Edited sentence: Defenders of the theory claim that it is validated by the fact that when many people are exposed to certain germs not all them will succumb to those germs.It is especially considered that the pH of the body is important, and that an acidic pH will attract germs and an alkaline pH will repel them