Now people always have all kinds of strange diseases for many reasons, one of which is diet:
Pesticide residues in plant-derived foods and antibiotic residues in animal-derived foods. The cumulative toxicity of pesticide residues and its toxicity to liver and kidney can not be ignored. Although you can't be poisoned once, it is undoubtedly very dangerous for your body to stay in this environment for a long time.
Many pesticides will gradually accumulate in the human body and it is difficult to discharge. For example, the defoliant used by the US military in the past caused many people, including the US military itself, to get cancer!