Subway, one of the world’s biggest bread bakers, is about to remove a chemical from its breads that raised the ire of an influential health activist and food blogger.

The world’s biggest sandwich chain says it’s in the process of removing the chemical known as Azodiacarbonamide from its sandwich breads — a chemical that Vani Hari, who runs the site FoodBabe.com, says is commonly used to increase elasticity in everything from yoga mats to shoe rubber to synthetic leather. It’s used for the same reason in bread, she says, as a dough conditioner.

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