Magnesium for Women Over 40: What You Need to Know (But No One’s Telling You)
Photo by Anthony Mucci
If you’ve ever felt tired, moody, bloated, anxious, or just off in your 40s or beyond, you’re not alone. What many women don’t realize is that one single mineral could be playing a huge role in all of those symptoms—magnesium.
But here’s the thing: not all magnesium is created equal. And after 40, your body’s relationship with magnesium changes. Let’s break down why that matters—and what you need to know to start feeling more like you again.
Why Magnesium Is a Must-Have After 40
Magnesium is responsible for over 300 chemical reactions in your body. Yes, three hundred. That includes things like:
Balancing your hormones
Helping you sleep soundly
Regulating blood sugar and insulin
Supporting your nervous system and mood
Keeping digestion moving
Helping your body detox efficiently
If you’re dealing with stubborn weight, mood swings, or disrupted sleep, magnesium might be one of the key missing pieces—and one of the first things I address with clients in their 40s and 50s.
Why So Many Women Are Deficient
Even if you eat a generally healthy diet, the odds of being low in magnesium are high. Here's why:
Chronic stress drains your magnesium stores rapidly (hello, modern life).
Processed foods have little to no magnesium.
Gut imbalances or poor absorption can keep you from utilizing what you do take in.
Hormonal shifts during perimenopause can increase your body’s demand for magnesium.
This can lead to a frustrating cascade of symptoms like brain fog, fatigue, anxiety, constipation, and even more intense PMS.
The Role of Magnesium in Hormone Balance
One of magnesium’s most underrated roles? Supporting estrogen metabolism and detox.
Magnesium helps move excess estrogen out of the body through the liver and gut. Without enough of it, you could end up with recirculating estrogen—leading to symptoms like:
Breast tenderness
Bloating
Irritability
Heavy or irregular periods
If you've been told your symptoms are "just part of getting older," think again. Supporting your magnesium levels is a practical first step to regaining balance.
Why Your Supplement Might Not Be Working
Here’s where things get a little tricky.
There are multiple forms of magnesium—and some are far more effective than others. If you’ve ever taken a supplement and felt no difference (or had unwanted side effects like diarrhea or cramping), chances are you were using the wrong type.
And while I break down my top 3 recommended forms in the video, here’s what I’ll say: quality matters, and so does matching the form to your specific symptoms and goals.
Want the Full Breakdown?
In the video, I share:
Which forms are best for sleep, stress, brain fog, and more
Which ones to avoid (even if they’re on the shelf at your local pharmacy)
How to time your magnesium for maximum benefit
And the non-oral options to try if your gut doesn’t tolerate it
🎥 👉 Watch the Full Video Here: “Magnesium After 40: What No One Tells You (and Why It Matters)”
🌿 Feeling Off? Let’s Dig Deeper…
If your symptoms feel bigger than just one supplement, don’t worry—you’re not alone. I created two free tools to help women like you get started:
🧪 Free Hormone Imbalance Quiz
This is for you if… you’re not sure what’s going on, but you know your body isn’t acting like it used to.
👉 Take the Quiz
🧃 Free 7-Day Hormone Reboot
This is for you if… you want a simple plan to support your hormones with food, hydration, and habit shifts—no overwhelm, no fluff.
👉 Start the Reboot
Final Thoughts
Magnesium may not be flashy or trendy—but it’s foundational, especially in midlife. And understanding the right way to use it could be the shift you’ve been looking for.
Be sure to watch the video if you want to dive deeper—and don’t forget to subscribe on YouTube if you love learning about how to work with your body instead of against it.
Your hormones are talking. Let’s start listening.
—Dr. Renee