Do you often feel like your body is exhausted, but your brain is like a party in full swing, tossing and turning and unable to fall asleep? Don’t rush to take sleeping pills just yet! It might be because your body is lacking a key nutrient called “magnesium,” which prevents your nervous system from switching into rest mode.

Stress and Late Nights Causing Poor Sleep? “Magnesium” is the Key
Tai Hsiao-Fu, Director of Wen-Xin Clinic, pointed out that modern people live under high stress, often drink coffee for an energy boost, and frequently stay up late. These habits unknowingly deplete the body’s magnesium. Magnesium participates in over 300 metabolic reactions in the human body, playing a crucial role in relaxing nerves, soothing muscles, and regulating stress hormones. When too much magnesium is depleted, the body naturally struggles to relax, which in turn affects sleep quality.
Study: “Magnesium” Deepens Sleep and Stabilizes Mood
A preliminary clinical trial published in Sleep Medicine X in 2024 found that subjects who took a daily supplement of “magnesium-L-threonate” for three weeks not only experienced an increase in deep sleep and Rapid Eye Movement (REM) sleep duration, but also fell asleep faster, while enjoying more stable daytime energy and moods. However, Dr. Tai Hsiao-Fu also reminded that this study had a small scale, and larger studies are still needed to confirm its long-term effects.
Not All Magnesium is the Same! Expert Explains Various Benefits

Dr. Tai Hsiao-Fu emphasized that not all magnesium supplements are the same; different types serve different needs:
- Magnesium Citrate: Has good absorption rates, suitable for those wanting to relax or those with occasional constipation, though a few people may experience loose stools.
- Magnesium Glycinate: Gentlest on the digestive tract, it is the most commonly used type to improve sleep and relieve stress.
- Magnesium Oxide: Although it has a high magnesium content, its absorption rate is poor, and it is mainly used as a stool softener.
- Magnesium-L-Threonate: Animal studies show it crosses into the brain more easily, and it is currently considered to have potential for helping deep sleep and improving concentration.
Natural is Best! Easily Supplement Magnesium from Daily Diet
Instead of rushing to buy supplements, it’s better to start with natural foods. Dr. Tai Hsiao-Fu suggests consuming more magnesium-rich foods such as dark green leafy vegetables (e.g., spinach, sweet potato leaves), beans, nuts, brown rice, and oats. Through a balanced diet, you can get about 300–400 mg of magnesium per day. If you still feel tense, anxious, or frequently experience cramps after dietary adjustments, then consider using supplements.
Read Labels Smartly: Supplementing “Magnesium” Power Without Error
When purchasing supplements, Dr. Tai Hsiao-Fu reminds consumers to carefully read the labels. First, look for “Elemental Magnesium,” which is the actual amount of magnesium the body can utilize. The recommended daily supplementation upper limit for adults should not exceed 350 mg.
Dr. Tai Hsiao-Fu also reminds that excessive magnesium supplementation can cause gastrointestinal discomfort such as diarrhea and nausea. If you have kidney-related issues, are pregnant, or are on long-term medication, be sure to consult a professional doctor or nutritionist before supplementing. Magnesium is not a sleeping pill, but it can help the body relax. When the nervous system calms down and rhythms restabilize, sleep will also become deeper.
