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Does Soy foods Affect Copper?
May affect absorption or how you feel
The short answer
Phytic acid in soy chelates copper and reduces its absorption in the gastrointestinal tract.
How to arrange timing
Take copper supplements at least 2 hours apart from soy foods.
Reference
Reference noted for this food and supplement combination: NIH ODS 2024; Lönnerdal, Am J Clin Nutr 2000
Important context
The effect can also change with food amount, supplement dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.