Does High-fiber foods Affect Copper?

May affect absorption or how you feel

The short answer

Phytates in high-fiber foods chelate copper, forming insoluble complexes that reduce absorption by up to 50%.

How to arrange timing

Take copper supplements at least 2 hours apart from high-fiber meals.

Reference

Reference noted for this food and supplement combination: NIH ODS 2024

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.