2) Sleep problems
Magnesium is well-known as a relaxation mineral. There are several theories based on research that explain how a deficiency of magnesium can affect sleep. Magnesium helps in the functioning of GABA receptors in the brain which is important in transitioning the body to a restful state. It also helps to stimulate the nerves of the parasympathetic system which aids in relaxation and calmness.
Relaxing of muscles and stimulation of GABA neurotransmitters can contribute to good sleep. A deficiency of magnesium can cause major sleep issues including insomnia. Furthermore, a deficiency of magnesium can cause decreased levels of melatonin, a sleep hormone.