Monthly Blood Loss: A Built-In Risk

Menstruation is one of the top contributors to iron loss in women.

Every period, a woman loses about 30 to 40 milliliters of blood, sometimes more.
That’s 15–25 mg of iron gone each month, and it needs to be replaced through diet or supplements.

For women with heavy periods, the loss can be double or triple that amount.
Over time, it adds up—draining iron stores like a leaky bucket that never refills fast enough.

Pregnancy and Breastfeeding: Iron Demand Skyrockets

During pregnancy, iron requirements double to support:

And yet, many women enter pregnancy already iron deficient, unaware and untested.
If they don’t supplement, their stores get wiped out—often leading to postpartum exhaustion, brain fog, and mood changes.

Breastfeeding continues the demand, making recovery even more challenging.

Undereating and Diet Culture

Many women are:

These patterns often mean low iron intake, especially low heme iron, the form best absorbed by the body.

And even when women eat “healthy,” they may unknowingly combine iron-rich foods with things that block absorption, like:

Gut Issues That Block Absorption

Conditions like:

...can impair iron absorption, even when intake is sufficient.

This means a woman could be eating plenty of iron and still be depleted.

Life Expectations vs. Biological Needs

Society expects women to keep going, no matter how they feel.

Fatigue, irritability, hair loss? “It’s hormones,” they’re told.

But many of these are symptoms of iron deficiency, not weakness.

Worse, standard blood tests often miss the problem until it becomes anemia.

So women keep suffering in silence, told everything looks “normal” on paper.