I read a study a while ago, the study found common vitamin deficiency in depressed humans.

I researched more about it and looks like some of the deficiency in the vitamins in the study are correlated with higher IL-17 levels.

Carnitine: Seems to have some effect in decreasing IL-17?

Vitamin D: Highly impacts IL-17 (https://pmc.ncbi.nlm.nih.gov/articles/PMC4609465/)

COQ10: Decreased plasma levels of IL-17 (https://www.clinicalnutritionespen.com/article/S2405-4577(22...)

Folic Acid: Reduces IL-17 (https://pmc.ncbi.nlm.nih.gov/articles/PMC8839991/)

Lutein: I didn't find any study that seems to study the effect on IL-17

Citrulline: No relevant studies

This is the study I'm referring to: https://www.nature.com/articles/s41398-023-02696-9

I think we're getting closer to find some blood level correlations, so we can fix them!

I can say for a fact when I take CoQ10, I feel my energy levels going up so it really has some effect.