Magnesium is an essential mineral involved in hundreds of biochemical reactions in the body, including those that regulate sleep. It plays a key role in supporting the nervous system, muscle function, and the production of neurotransmitters and hormones that influence sleep, making it an increasingly popular natural supplement for those seeking to improve their sleep quality. Magnesium supports sleep through several mechanisms. It regulates the activity of GABA (gamma-aminobutyric acid), an inhibitory neurotransmitter that promotes relaxation and reduces neural activity, helping the brain and body prepare for sleep. Magnesium also helps regulate melatonin production and is involved in reducing levels of cortisol, the body’s primary stress hormone, which can interfere with sleep when elevated. Research suggests that magnesium supplementation may be beneficial for people with low magnesium levels, which is associated with poor sleep quality, insomnia, and restless legs syndrome. A deficiency in magnesium is relatively common, partly due to modern dietary patterns that may not provide adequate amounts from food sources alone. Good dietary sources of magnesium include dark leafy greens (such as spinach and kale), nuts and seeds (particularly pumpkin seeds and almonds), legumes, whole grains, dark chocolate, and avocado. For those who cannot meet their magnesium needs through diet alone, supplementation with magnesium glycinate, magnesium citrate, or magnesium malate is often recommended, as these forms are generally well-absorbed. Magnesium is generally considered safe when taken at recommended doses. However, excessive intake from supplements can cause digestive side effects. It is advisable to consult a healthcare professional before starting magnesium supplementation, particularly if you take other medications.