Ferritin and iron for women: the missed root cause behind fatigue and hair loss

A ferritin of 22 ng/mL is technically "in range" at most US labs - and it will leave you exhausted, shedding hair, and unable to tolerate cardio. The reference range was built around "not anemic," not "functionally well." Here's the real ferritin target for women, why it gets missed, and how to fix it without bricking your gut.