[browningstreet]

An elimination diet is a protocol where you start with a baseline of "safest" foods and exclude everything for a while, and then.. in an orderly fashion, start to re-introduce foods while noting how you respond or change in light of those additions. It's a protocol, one you can get from a nutritionist or dietician or by searching online. And the food lists can be adapted to people with varying eating modalities.

[dredmorbius]

NB: "Nutritionist" and "dietician" are similar terms which can have very different meanings in practice.

In the U.S., a dietician is a board-certified credential with specific training and licensing requirements.

Nutritionist is a far looser term, though there may be some registration required.

Elsewhere, the terms may be interchanged, or used interchangeably.

Be aware of which you're looking at.

https://www.healthline.com/nutrition/dietitian-vs-nutritioni...