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Signs of Magnesium Deficiency & How It Affects Your Sleep

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March 13, 2025

Signs of Magnesium Deficiency & How It Affects Your Sleep

Medically reviewed by: 

Dr. Shiyan Ooi

School of Medical Sciences, University of Manchester

Magnesium is an essential mineral that plays a crucial role in many bodily functions, including sleep regulation. A deficiency in magnesium can lead to various health issues, including poor sleep quality and insomnia.

Common Signs of Magnesium Deficiency

A magnesium deficiency can manifest in several ways, such as:

  • Muscle cramps and twitches
  • Fatigue and weakness
  • Anxiety and irritability
  • Difficulty falling or staying asleep
  • Restless legs syndrome

According to research, low magnesium levels are linked to increased stress and disrupted sleep patterns (National Institutes of Health).

How Magnesium Supports Sleep

Magnesium plays a vital role in sleep by:

  • Regulating melatonin production, which controls sleep-wake cycles
  • Reducing cortisol levels, a stress hormone that can interfere with sleep
  • Enhancing GABA activity, a neurotransmitter that promotes relaxation

How to Increase Magnesium Levels

To maintain healthy magnesium levels and improve sleep, consider these options:

  • Dietary sources: Consume magnesium-rich foods such as spinach, almonds, bananas, and whole grains.
  • Supplements: Magnesium glycinate and magnesium citrate are commonly recommended for sleep support.
  • Topical applications: Magnesium oil or Epsom salt baths can be used for better absorption.

When to Seek Medical Advice

If you suspect a magnesium deficiency is affecting your sleep, consult a healthcare provider for testing and personalized recommendations.

Conclusion

Magnesium is essential for restful sleep, and deficiency can lead to insomnia and other health concerns. By ensuring adequate magnesium intake, you can support better sleep and overall well-being.

Dr. Shiyan Ooi

Dr. Shiyan Ooi is a medical doctor with over a decade of experience treating patients with chronic conditions. She graduated from the University of Manchester with a Bachelor of Medicine and Surgery (MBChB UK) and spent several years working at the National Health Service (NHS) in the United Kingdom, several Singapore government hospitals, and private functional medicine hospitals. Dr. Ooi specializes in root cause analysis, addressing hormonal, gut health, and lifestyle factors to treat chronic conditions. Drawing from her own experiences, she is dedicated to empowering others to optimize their health. She loves traveling, exploring nature, and spending quality time with family and friends.