Due to the “average” diet, the way foods are processed, and the way our water is treated, most of us are magnesium deficient. Many suffer from a magnesium deficiency without knowledge. The most common symptoms of a magnesium deficiency are insomnia, depression, chronic fatigue, asthma, irregular heartbeat, migraines, anxiety, high blood pressure, hormone problems, muscle cramps/spasms, and lack of energy.