Yes the phytic acids prevent absorption of trace minerals like iron and magnesium etc from whole wheat or whole grains.
Next Steps
To reduce the phytic acid content, we can soak the wheat and discard water.And sprouting and germinating of the whole wheat is recommended to break down the phytates. Refining the whole wheat reduces the phytic acid content.
Health Tips
The bodys absorption of these minerals is blocked by the phytic acids as well as each other. so
calcium, manganese and copper decrease absorption of iron .