Yes you can. Chemotherapy can cure cancer and kill you at the same time.
It does one or the other. No one has ever had their cancer cured and then died solely due to chemotherapy. Either the chemo cured them of cancer and they lived or the cancer killed them regardless.
Soil-Based Organisms aren't bad for you. They don't kill you. They're good for you. They're on our side. The top ten inches of soil are teeming with an incredible number of organisms which are beneficial to plants and animals, and live in harmony with higher life forms to help each other out in exchange for survival. When you eat dirt you are supplying your system with powerful organisms which will help you out in many ways.
On the opposite spectrum of life we have bad organisms which feed off of dead and decaying matter, some of which actively try to kill the host as a food source. They are commonly referred to as parasites and disease.
Life tends to exist in favor with its environment. If dirt is negatively charged, it makes sense that plants, good bacteria, animals, would be negatively charged as well, or at least neutral. Bad organisms, which are positively charged, do not live in abundance in the dirt of a vegetable garden. They primarily spread through contact and infection. If you put a drop of Tuberculosis into your garden, it will not grow and spread to contaminate the soil with its copies. It would just die and get trapped in the dirt. This is because dirt is not its natural home. It would be positively charged Tuberculosis bacteria in negatively charged soil. But if you put the contents of a healthy bowel movement full of the good bacteria in the gut into the garden, that good bacteria will be in favor with the soil and spread all over the place.
Nature has framed life in this way for a many number of reasons, such as an easier identification of friend and foe, the ability to take advantages of shared nutrients, and the ability to create poisons which do not destroy things friendly to it.