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C-sections double blood loss, yet we donāt always test for iron depletion postpartum.
Nearly a third of new mothers are low on iron, causing persistent fatigue and brain fog.
Request ferritin testing at your 6-week visit.
Aim for levels above 50 ng/mL.
After both of my deliveries, I received IV iron while recovering in the hospital. In France, where new mothers typically stay for three days, itās a proactive approach to postpartum iron supplementation.
But for many womenāespecially in the US where hospital stays are shorterāiron status vanishes from the medical radar the moment baby arrives.
It's a striking oversight: birth depletes your iron reserves significantly, yet standard postpartum care rarely includes testing or replenishment.
If you're struggling with extreme fatigue, brain fog, feeling down, or feeling "not yourself" months after delivery, your iron status might be the missing pieceāeven if your doctor says you're "recovering normally."
Today, I'm breaking down what the science tells us about postpartum iron depletion, why birth method matters, and how to reclaim your energy when standard care falls short.
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𩸠Birth and Blood Loss
The moments after birth should be filled with joy. But the reality is that every delivery involves significant bleeding, no matter how you deliver.
Hereās what that looks like:
Vaginal birth: ~500 ml (half a quart)
C-section: ~1,000 ml (one quart)
That means moms who have a C-section lose twice as much blood. And with that blood, your body loses ironājust when you need it most to recover.
š Delivery Method Matters: How C-Sections Change Your Iron Needs
During pregnancy, your body uses about 1,000 mg of iron:
Build the placenta and help your baby grow (350 mg)
Support your own blood supply (500 mg)
Handle the blood loss at birth (250 mg)
With delivery, blood loss alone means a loss of:
Vaginal birth: ~250 mg of iron
C-section: ~500 mg of iron
And that doesnāt account for postpartum hemorrhage (over 1,000 ml), which affects 1 to 5 out of every 100 births.
So itās no surprise that up to 3 in 10 new moms doesnāt have enough iron after birth. Itās more common in women with fewer resources, but it can happen to anyone.
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š§Ŗ Why Iron Testing Falls Through the Cracks
Despite the predictable blood loss and the known risk of postpartum anemia, iron status isnāt routinely checked during postpartum care.
Your 6-week visit often focuses on:
Checking how your body is healing
Talking about birth control
A basic physical exam
What's often missing? Comprehensive bloodwork.
Providers may think youāre fine if you donāt look pale, but the signs can be easy to miss:
Feeling tired all the time, even after sleep
Having a hard time focusing
Getting out of breath easily
Losing more hair than usual
Catching colds or bugs more often
š§ Low Iron Affects Your Mood and Mind
Iron doesn't just give you energy. It also helps your brain work well.
At 9 months after birth, studies show that moms with low iron were more likely to:
Be less engaged with their baby
This doesnāt just affect your health. It could affect your bond with your baby and your whole experience as a mom.
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Your 6-week visit is more than just a checkup. Itās a chance to catch what birth may have depleted. Hereās what to prioritize:
š§Ŗ Request ferritin testing at your 6-week postpartum visit.
Ask specifically for a full iron panelānot just hemoglobināto check your iron stores.š Factor in your birth method.
If you had a C-section or excessive bleeding, consider asking your provider about supplementation or retesting within 3 months.š§ Track lingering symptoms.
Fatigue, brain fog, hair loss, or frequent colds after birth may be signs of iron depletionāeven if labs werenāt offered.

š¬Ā Did your provider ever discuss iron levels with you after giving birth? What advice did they offer (if any)? Reply and let me know!
