I think the key is trying whatever Peat has suggested. After all, why not trust an expert enough to follow what they find has worked for them? That is what I did when doing zero carb, etc., until I became convinced it wasn't working for me, tweaking it along the way to try and make things work. However, I think that being open to the fact that for example, niacinamide might be the cat's meow for one person, while for the next, it may be deleterious, is important. It doesn't mean this outcome is engraved in stone. To me, it just means that you are willing to explore other options to find what does work. And in this case, after having tried TONS of OJ, sugar, oranges, etc. along with my egg, b/c I assumed I wasn't doing enough, and having the same negative result, I am finding that I do better without it when eating the egg. And that's okay.