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Do you still recommend a vitamin D range of 35 to 50 nanograms per milliliter? Converted, that would be 87.5 nanomoles per liter to 120 nanomoles per liter.

Chris Kresser: Yes, I do. I think that’s still a good range. We’re going to go into considerable detail on...

Obviously supplementation depends on individual factors, but for a rough guideline, taking somewhere between 2,000 and 5,000 IU can be a good place to start and retesting in a few months to see how that’s going, is that still a good idea?

Chris Kresser: If, for whatever reason, testing isn’t available, that’s OK. I would start with the lower end of that,...

MK-7 needs only to be taken once a day, as it stays in the body, and MK-4 should be split into three doses because it doesn’t stay in the body?

Chris Kresser: I don’t know about that. I mean, if you think about this in terms of food, which is...

How much PHGG do you recommend for IBS daily? Is there a particular brand that you recommend?

Chris Kresser: The study showing that PHGG improved treatment outcomes while patients were taking rifaximin was 5 grams. Other studies...

What brand do you prefer for high-vitamin cod liver oil?

Chris Kresser: At this point, I prefer Extra-Virgin Cod Liver Oil, although I think the fermented cod liver oil from...
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