What the data says about magnesium and sleep

We get more questions about magnesium than any other nutrient. Most of them are about sleep.

What the research actually shows#

Magnesium is involved in GABA receptor function. GABA is the inhibitory neurotransmitter that helps you wind down. Low magnesium → less inhibition → lighter sleep, more wake-ups.

Several randomised trials of magnesium supplementation in older adults with insomnia show modest improvements in sleep latency (the time it takes to fall asleep) and sleep efficiency. Not miraculous. Real.

Why we don't lead with supplements#

Two reasons:

1. Form matters and most over-the-counter magnesium is the wrong form. Magnesium oxide is cheap and poorly absorbed. Magnesium glycinate or citrate are better. Most aisle pills are oxide.
2. Food magnesium comes with its co-factors. Pumpkin seeds, dark chocolate, almonds, and black beans all bring other minerals along for the ride.

What a magnesium-shaped day looks like#

• Breakfast: oatmeal with pumpkin seeds and dark berries.
• Lunch: black bean salad with a handful of almonds.
• Snack: two squares of 70%+ dark chocolate.
• Dinner: cooked greens, brown rice, salmon.

That's well over 400mg of magnesium without a pill in sight.

When supplementation makes sense#

If your bloodwork shows chronically low magnesium and your diet isn't moving the needle, talk to your GP or dietitian. They'll often suggest glycinate at 200-400mg before bed. That's a clinical decision, not a coach decision.

The coach in the app will tell you which nutrients are short. It will not tell you to take a pill. That's the consistent line.