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Postnatal Depletion

What is Postnatal Depletion and do I have it?

Let’s clear something up: postnatal depletion is not the same as postnatal depression—and mistaking one for the other can have long-term consequences for a mother’s wellbeing.

While there’s some overlap in symptoms, these are distinct conditions. 

Postnatal depression is marked by clinical depression and anhedonia—a state where a mother no longer finds joy in what used to bring joy, even in her new baby. It’s serious. It’s dangerous. And it must be treated by competent mental health professionals. 

Postnatal depletion, on the other hand, is a syndrome—not a disease. That distinction matters. In medicine, a disease is like a room with one door: a single cause leads to a known outcome. But a syndrome is a room with many doors. Multiple pathways in, many overlapping symptoms, no one-size-fits-all cause or treatment. 

Here’s how I describe it to mothers:

Imagine your body as a plastic bag full of water.

Pregnancy, birth, breastfeeding, sleepless nights—they’re like tiny pinpricks in the bag. One or two, and you barely notice. But over time, those holes multiply faster than your body can repair them. Your reserves leak away. You’re running on empty. And it can take years to refill.

This isn’t about weakness.

This is about physiological, neurological, and emotional depletion.

It’s about:

  • The enormous nutrient demands of growing and feeding a baby
  • The bone-deep exhaustion of broken sleep
  • The invisible toll of isolation and a seismic identity shift
  • The ability to regulate emotional wellbeing from conception, throughout the pregnancy, and into the demands of the postpartum

And yet, because postnatal depletion doesn’t fit neatly into the linear models of modern medicine, it often goes unseen. Or worse—mislabeled.

A mother may not be clinically depressed.
But she’s not well either.

Depletion may be common—but it is not normal. And it is not inevitable.

Ideally the doors that lead to postnatal depletion can be completely avoided—if we change the way we care for mothers.

In clinical work with thousands of mothers, I’ve identified four core forces that slowly and persistently wear down a mother’s body, brain, and spirit — often beginning well before the baby is born.

(I explore these in more detail in my book The Postnatal Depletion Cure.) 

1. Stress (especially prolonged stress)

Chronic stress changes everything.

It reshapes the brain, depletes our energy systems, weakens gut and immune function, and even alters how hormones are made and received. Mothers are often in a hypervigilant state for months or years, especially after a traumatic birth or unsupported postpartum.

The hard part? Many mothers don’t even realise how stressed they are — because it’s been that way for so long. 

2. Social pressures

Modern mothers are expected to raise children without the village — and maintain careers, partnerships, appearances, and emotional stability at all times.

This leads to what has been called “Superwoman Syndrome”: where the expectation is to constantly give more than you have, never being allowed to rest, and feeling guilty when you do.

It’s a perfect storm for burnout — but because it’s so normalised, it often goes unrecognised. 

3. Inflammation

The physical body plays a major role too. For many women, the postpartum period involves:

  • Nutrient depletion (especially iron, zinc, iodine, omega-3s, B vitamins)
  • Gut dysfunction (due to stress, antibiotics, or birth-related trauma)
  • Ongoing sleep disruption
  • Blood sugar dysregulation
  • All of these can contribute to chronic inflammation — which affects brain function, mood, immunity and hormone balance.

4. Environmental toxins

This one’s often overlooked.

We now know that a mother’s body can still carry some of its lifetime’s worth of chemical exposures — from food additives and plastics to pesticides and endocrine disruptors. During pregnancy and breastfeeding, these can be mobilised and redistributed, affecting both the baby and the mother.

In many of the mothers I see, these environmental burdens are a significant — and reversible — driver of their depletion.

I explore this further in an unpublished chapter I wrote on environmental toxins and postnatal health. You can download it for free here.

My life’s work has been driven by one clear goal: to ensure every mother has access to the information and care she needs — not just to prevent postnatal depletion, but to recover from it.

The bottom line is this: if we want a healthy society, we need healthy communities. And to have healthy communities, we need strong families. That starts with the mother being physically, emotionally, mentally, and spiritually well.

Postnatal depletion can silently erode that foundation. But the good news is, it’s reversible. And the first step is understanding how it might be showing up in your life.

Below is a questionnaire I developed to help identify signs and symptoms that may be pointing to postnatal depletion. You might be surprised by what resonates.

Do you have Postnatal Depletion?

Download this PDF quiz to find out:

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I hope the questionnaire is both validating and helpful. With the right support, you can start closing the doors to depletion—one by one—and begin the process of reclaiming yourself. 

If you think you are experiencing the signs and symptoms of Postnatal Depletion, consider exploring Dr Oscar Serrallach's free resources and courses.

Access free resources for Postnatal Depletion

Dr Oscar Serrallach

Dr Oscar Serrallach specialises in maternal health, with a focus on integrative and functional medicine, and postnatal wellbeing.

He coined the term postnatal depletion, and his book The Postnatal Depletion Cure (2018) was the first research to really look at the unique biology and hormones of a woman after giving birth and the toll that pregnancy birth and breastfeeding will place on her, especially if she is already depleted going into pregnancy.

While postpartum depression has become a recognisable condition, this is the first book to treat root causes of mommy brain, baby blues, and other symptoms that leave mothers feeling exhausted.Â