The Science Behind Magnesium and Better Sleep

Insomnia affects millions of people worldwide. While sleeping pills are often prescribed, many people are turning to natural alternatives to optimize their rest. Magnesium, an essential mineral involved in over 300 biochemical reactions in the body, has emerged as a frontrunner.

But does the science stack up? Let's take a closer look at how magnesium affects your brain and body to promote relaxation.

How Magnesium Works

Magnesium plays a critical role in regulating neurotransmitters, which send signals throughout the nervous system and brain. It also regulates the hormone melatonin, which guides sleep-wake cycles.

Specifically, magnesium binds to gamma-aminobutyric acid (GABA) receptors. GABA is the neurotransmitter responsible for quieting down nerve activity. By increasing GABA levels, magnesium helps to calm the nervous system and prepare the body for sleep.

Types of Magnesium

Not all magnesium supplements are created equal. For sleep and relaxation, look for forms that are easily absorbed and have a calming effect:

• Magnesium Glycinate: Highly bioavailable and gentle on the stomach. Often considered the gold standard for sleep.
• Magnesium Citrate: Good absorption but can have a laxative effect at higher doses.
• Magnesium Threonate: Able to cross the blood-brain barrier effectively, potentially supporting cognitive function as well as sleep.

What the Research Says

A study published in the Journal of Research in Medical Sciences found that supplementation of 500 mg of magnesium daily for 8 weeks resulted in significant increases in sleep time and sleep efficiency, as well as higher concentrations of renin and melatonin, and lower concentrations of cortisol.