Olives and sesame seeds - risk of cross-contamination?

[celiacinrecovery]

My naturopath is treating me for leaky gut and histamine intolerance (on top of my celiac, which is under control). She recommended eating olives before meals, and a "test" where I time the transit time of my bowels by eating sesame seeds.

I don't eat either of these. I know they're gluten free, but whenever I introduce something to my diet my mind turns to the risk of cross-contamination.

How risky are olives and sesame seeds? Are there any things I should keep in mind? I'm particularly concerned about sesame seeds, as from my experience this sort of product is often processed in facilities that also process allergens.

Any thoughts, tips, or words of reassurance? Thank you!

[knitty kitty]

Buying certified gluten free products helps immensely.

Nuts.com sells gluten free sesame seeds.

https://nuts.com/gluten-free/cookingbaking/seeds/sesame/?refinementList[Product.facets.value][0]=gluten-free

 

I test my transit time with beets.  Don't be surprised by the color, though.

Edited February 27, 2022 by knitty kitty
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[Blue-Sky]

Sesame seeds and olives are probably good. It is likely for sesame seeds that they take steps to make sure that all dirt or contaminates are removed from the seeds before they are packaged. It is unlikely that wheat or wheat flour contaminates those machines. 

My guess is that highly processed foods like candy for example, which require more steps along the way and more ingredients, are more likely to pick up cross contamination.