A few recent posts regarding more complex and deep iron-related issues and I found these two substantial and complex papers.
For those who need more than the simplest levels of advice and information, they might be worth at least a skim read.
I do not pretend for one moment to have understood the complex information. It needs far more time and attention than I have given it. (And brain power! )
Ferritin - from iron, through inflammation and autoimmunity, to COVID-19.
europepmc.org/article/MED/3...
Effects of Hypoxia and Inflammation on Hepcidin Concentration in Non-Anaemic COVID-19 Patients.
europepmc.org/article/MED/3...
Buddy195 Maldeerum