How a unaware patient(constipation), victim of a daily poisoning with microdoses could uncover it?

Question

When:
1. He don't suspect.
2. Him physicians consider it an intreactable psychologycal case.
3. A mass spectrometry isn't justifiable.
4. The poisoner was a amerindian cooker, knowledgeable in the unexplored amazonian venoms.
-Theoretically asyntomatic poisoning is real:
Particles of asbesto in food, CrV in tanning of Jackets, a fryer of Teflon, recipients of plastic, some preservants, smoke in air...
(All of there are cancerogenics).
In addition; Occupational toxicology was clasified several cancerogenic substances.

Answer 1

take your meds, then re-state your question.