Dr. Amy Nett: Yeah. So in general we really don’t recommend long-term supplementation with anything other than maybe cod liver oil and magnesium glycinate because magnesium is just difficult to get enough in the diet alone. Similarly, cod liver oil has a pretty unique nutrient profile. New research is always coming out seemingly raising questions about long-term supplementation with just about everything, particularly when we’re looking at nutrients outside the context of food. So we’ve talked a couple times about selenium, and selenium is great in food sources. But then there’s a question about supplementing with selenium outside of food. So the safest approach is always to use food sources.
Additionally and specific to glutathione, when you take a glutathione supplement, you might actually be suppressing the body’s own production of glutathione. We looked at, there was one study though that showed, I think, if you’re supplementing with glutathione, you decrease your own production. But then coming off of glutathione, I think it was just two to four weeks actually allowed the body to start producing glutathione again. So at least you want to take holidays, but yeah, in general, really, the goal is to just use a nutrient-dense diet to get all of the support that you need. So all of the supplements we talk about really are used for a therapeutic approach.