Magnesium deficiency is one of the most common mineral deficiencies in North America. It can contribute to a multitude of symptoms and long-term health concerns. Magnesium is an essential mineral for the optimal functioning of the cardiovascular, nervous, and musculoskeletal systems. It also plays a role in mood stabilization and has been shown to be an effective treatment for major depression. Magnesium deficiency can also contribute to symptoms such as migraines, PMS, dysmenorrhea, muscle cramping, and insomnia. This deficiency is also commonly seen in alcoholics and patients with diabetes mellitus.