Leaderboard

This is a really common area of confusion. Most natural cheeses (cheddar, Swiss, mozzarella, Parmesan, brie, camembert, and most blue cheeses) are inherently gluten-free, and you’re right that the molds used today are typically grown on gluten-free media. The bigger risks tend to come from processed cheeses: shredded cheese (anti-caking agents), cheese spreads, beer-washed rinds, smoke-flavored cheeses, and anything with added seasonings or “natural flavors,” where cross-contact can happen. As for yeast, you’re also correct — yeast itself is gluten-free. The issue is the source: brewer’s yeast and yeast extracts can be derived from barley unless labeled gluten-free, while baker’s yeast is generally safe. When in doubt, sticking with whole, unprocessed cheeses and products specifically labeled gluten-free is the safest approach, especially if you’re highly sensitive.

Kirkland brand (at Costco) is gluten-free and is 2,000 IU.

Thanks a lot for your response! Can you maybe specify which kind of cheeses I should be cautious about? Camembert/Brie and blue cheeses (the molds of which are nowadays mostly grown on gluten-free media, though, so I've read, right?) or other ones as well? Also, I was under the impression that yeast is generally gluten-free if not declared otherwise. Is that false?

I agree with @trents, but thank you for bringing this up here!

Hi @trents, yes I've had my levels checked in Dec 2025 which revealed vit D deficiency. I considered eggs although they only contain about 45 IU vitamin D/egg. I need 2000 IU vitamin D for maintenance as per my doctor. Although now, I likely need way more than that to treat the deficiency. My doctor has yet to advise me on dosing for deficiency. I've also considered cod liver oil, although again, if it's processed in a facility that has gluten, especially on flour form, I worried to test it, even if they have protocols in place to mitigate cross-contamination with gluten.