Why Magnesium Gets Depleted
Magnesium is heavily used during stress. And sadly, these days – we’re all stressed! Every time your body activates its stress response, magnesium helps regulate nerve transmission and muscle contraction. The more often that system is triggered, the more magnesium your body uses.
Research shows chronic stress increases urinary magnesium loss, creating a cycle where stress lowers magnesium, and low magnesium increases stress sensitivity (Pickering et al., 2020)
Alcohol can compound this effect. Regular alcohol intake increases magnesium excretion through the kidneys and may impair absorption in the gut (Nielsen & Lukaski, 2006)
This doesn’t mean occasional drinking automatically creates deficiency. But when stress, sleep disruption, and regular alcohol use overlap, magnesium levels can decline more quickly than people realize.
Add in highly processed diets, soil depletion, and high caffeine intake, and it becomes easier to see why mild magnesium insufficiency is common.
What Low Magnesium Feels Like
Magnesium helps muscles relax after they contract. When levels are low, muscles tend to fire more easily and release less efficiently.
Common signs include:
- Persistent muscle tightness
- Jaw clenching or TMJ discomfort
- Headaches
- Restless or light sleep
- Increased stress reactivity
- Fatigue paired with tension
If this sounds familiar, please pay attention to your body! Magnesium also plays a role in regulating NMDA receptors in the brain, which influence excitability. When magnesium is low, these receptors can become overactive, increasing nervous system stimulation. For a clinical overview, see the NIH Office of Dietary Supplements.
That’s why magnesium is often associated with improved sleep and reduced tension. It’s not sedating the body. It’s helping the nervous system regulate more efficiently.
Only about 1% of the body’s magnesium is found in the bloodstream. Most is stored in bone and soft tissue. That means serum magnesium levels can appear “normal” even when tissue levels aren’t optimal.
This is why mild deficiency can be missed. Symptoms often show up before labs do.
That doesn’t mean supplementing blindly. It means looking at the full clinical picture: stress load, muscle tone, sleep quality, diet, and lifestyle patterns. Always keep your doctor in the loop.
Supporting Healthy Levels
Food remains the foundation. Leafy greens, nuts, seeds, legumes, and whole grains are all good sources. But in periods of high stress, diet alone may not fully replenish levels.
Other supportive steps include:
- Reducing chronic stress load where possible
- Improving sleep consistency
- Limiting excessive alcohol intake
- Staying hydrated
- Considering targeted supplementation when appropriate
Magnesium glycinate and magnesium threonate are typically better absorbed than magnesium oxide, which tends to have lower bioavailability.
At On-The-Go Wellness, we view magnesium as one piece of the regulation puzzle. You know us, whole person wellness and all that. This is why we formed our partnership with an amazing science backed supplement company and now carry professional-grade magnesium from Biotics Research in the office.
We’re always happy to help you decide whether dietary changes, supplementation, or additional nervous system support makes the most sense for you (again, along with your doctor!)
Magnesium isn’t a cure-all. But in a high-stress world, it’s often one of the simplest, most overlooked foundations of nervous system health.
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