As a counterpoint example someone close to me was diagnosed with irritable bowel syndrome and told by doctors that there was no treatment and that diet did not help. When she adopted a paleo like diet with no other changes the IBD symptoms went away permanently almost immediately. Another counterpoint is that I was told by doctors when I was younger that diet was not a treatment for acne. This advice being based entirely on a single study with a single dietary intervention.
I think you have a mistaken understanding of what it takes to change one’s diet. A government handout wouldn’t help in the slightest. It also doesn’t help for a doctor to give someone a list of foods to eat or not eat.
A single diet might not be a cure for IBS, but IBS affects a digestive organ. Obviously, what you eat is going to affect a digestive organ, regardless of disease, and it seems obvious that a few folks have trigger foods.
And honestly, if diet were an easy way to cure acne, it'd be prescribed more. Just because you got one thing as a youth doesn't make the opposite true.
I think you have a mistaken understanding of what it takes to change one’s diet. A government handout wouldn’t help in the slightest. It also doesn’t help for a doctor to give someone a list of foods to eat or not eat.