Let me suggest you likely have some kind of vitamin deficiency making you obsessive. Address that and your relationship to food may stop being so problematic.
Hilarious that the FDA threw a fit over it.
Milk thistle (as a supplement) is a popular glutathione precursor. There are others but I don't remember them because milk thistle worked for me, so that's what I used.
If I were trying to help a child, I would likely start by removing particleboard furniture and other sources of off-gassing from their environment as a means to lighten the load on their liver.
Though to be frank, I did that for me as well, on top of supplements because I was very sick at the time.
Among other things.