TE, I think all he is saying is a healthy diet can always bring positive results.
Of course it will not cure ENS. However, a healthy diet can obviously have positive benefits, especially in regard to anxiety and depression; two large components of ENS.

3 most-regrettable turbinate removals over a 14 year span. And to think that ENT suggested cutting for a fourth time...GOOD GOD MAN, WTF?

However, there IS hope and quality of life CAN be restored.