Meet Magnesium: The Mighty Mineral Your Body’s Been Missing
- nutritionbyljb
- May 26, 2025
- 3 min read
If there’s one nutrient doing a thousand thankless jobs behind the scenes in your body, it’s magnesium. Known as a “multi-tasking mineral,” magnesium quietly supports everything from your energy levels to your mood, digestion, sleep, and muscle function — and yet, most of us don’t get enough of it.

In this blog, I’ll break down what magnesium does, why we often miss the signs that we’re low in it, and how you can boost your intake naturally (plus a few supplement smarts if you need them).
Why Magnesium Matters
Magnesium is involved in over 300 biochemical reactions in the body — that’s everything from keeping your heartbeat steady to helping your body make energy (ATP), regulating blood sugar, and even relaxing your muscles at night.
It also plays a huge role in your nervous system, helping you stay calm, focused, and resilient under stress.
In short: magnesium helps you keep calm and carry on.
Why It’s So Often Missed
You might assume that a standard blood test would show if you’re deficient in magnesium — but unfortunately, that’s not usually the case.
Only about 1% of magnesium is found in your blood. The rest is stored in your bones and inside your cells. That means blood levels don’t always reflect what’s happening in the tissues, and you can feel the effects of low magnesium even if your test results are “normal.”
Common Signs of Low Magnesium
Many of the signs of low magnesium are things people often dismiss as “just stress” or “getting older” — but could in fact be your body waving a little magnesium-deficiency flag:
Muscle cramps or twitching
Fatigue or low resilience to stress
Constipation
Trouble sleeping or restless legs
Headaches or migraines
Anxiety or low mood
PMS and menstrual cramps
Heart palpitations
If a few of these sound familiar, it’s worth exploring whether magnesium could help.
Where to Find Magnesium in Food
Nature has a great magnesium toolkit, and the best place to start is with your plate. Magnesium-rich foods include:
Leafy greens like spinach and Swiss chard
Nuts and seeds (especially pumpkin seeds, almonds, sunflower seeds)
Legumes like black beans and lentils
Whole grains such as brown rice and quinoa
Dark chocolate (yes, really!)
Avocados and bananas

However, even when you eat these foods regularly, modern farming practices and food processing can strip magnesium from our soil and ingredients — which means even a healthy diet might come up short.
Should You Supplement?
Sometimes food alone doesn’t cut it — especially if your body is under stress, recovering from illness, or dealing with digestive issues that limit absorption. That’s where supplements may help, but not all magnesium supplements are created equal.
Here’s a quick guide to some of the most common forms and what they’re best for:
Note: If you are on any medications then please check with a healthcare professional before taking any supplements. For example, magnesium may interact with blood pressure medications.
Magnesium Form | Best For | What to Know |
Citrate | Constipation, general support | Good absorption, can have a gentle laxative effect |
Glycinate | Anxiety, sleep, muscle tension | Very calming, great for sleep, well-tolerated |
Malate | Energy, fibromyalgia, fatigue | May support energy production, gentle on digestion |
Oxide | Occasional constipation | Poor absorption systemically, more of a laxative |
Threonate | Cognitive support, brain fog | Crosses the blood-brain barrier; emerging science |
Taurate | Heart health, blood pressure | May support cardiovascular function |
Sulfate (Epsom salts) | Muscle recovery, relaxation | Used topically in baths, not taken orally |
Tip: If you’re new to magnesium, start low and go slow. Too much too soon can lead to loose stools.
Final Thoughts: Is Magnesium the Missing Piece?

From poor sleep and headaches to cramps, constipation, and stress, low magnesium could be quietly contributing to symptoms you’ve just been “putting up with.”
And while it’s easy to overlook, addressing magnesium status can often be a game-changer — especially when guided by a nutritional therapist who can personalise the approach to your health history, lifestyle, and goals.
If you’re curious whether magnesium could help you feel more energised, less anxious, or finally sleep through the night, let’s chat.
Book a free discovery call and let’s explore your next steps.
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