I love how you say "modern" doctors are all quacks and shills in one sentence, then act like "oh, they would have said that" in the next. Which is it?
It's called tossing a bone to your side of the argument for the sake of discussion. In other words,
from your perspective, doctors can and will evaluate all relevant factors and come to correct conclusions. That being the case,
from your worldview, the doctor can be assumed to have determined said condition not to be present.
Personally, I have less confidence in this by far, which is why I recommend a dietary improvement prior to a visit to a doctor for a chronic complaint like this. Worst case scenario, the person has improved his diet, and will see a doctor the following week because symptoms haven't subsided. Best case scenario, symptoms subside, and no doctor visit is required.
Going to the doctor is one of the most dangerous things you can do these days, and should be avoided to the extent possible.
