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Magnesium insufficiency: identifying early warning signs, the element’s physiological mechanisms, and evidence-based criteria for selecting the most suitable supplement
Dietary Supplements
Nutritional Science
Nutritional Supplements
Magnesium Deficiency
Electrolyte
Magnesium
Emilia Szymańska
Author
2026-09-24
Date
3 min. read
article.read_time
5
Chapters
Nocturnal calf cramps, involuntary facial muscle twitches, excessively brittle fingernails, and accelerated hair shedding—these seemingly minor complaints may signal a chronic magnesium deficiency within the body. Learn which scientifically validated symptoms indicate an insufficiency of this vital electrolyte and what key factors to consider when selecting an effective magnesium formulation to restore biochemical equilibrium.
The action of magnesium
Magnesium is essential for the proper functioning of the human body. Along with potassium, it is the major intracellular ion. It is a cation, or positively charged ion, which is involved in over 300 enzymatic reactions that occur in our body's cells. Its effects are diverse, and the most important are its role in the synthesis of proteins and DNA, the basic carrier of information in our bodies. In addition, magnesium discovers key roles in muscle contraction and irritation and nerve-muscle stimulation in the bloodstream.
Symptoms of magnesium deficiency
Magnesium has a wide spectrum of activity and is involved in many processes in our bodies, so the symptoms can be diverse and difficult to relate to precisely this deficiency. The main causes of too little of this ion in our body are too little intake with diet, absorption disorders, and increased excretion with urine. Magnesium deficiency is very often seen in alcoholics, people with chronic diarrhea, and may also have a genetic disorder.
Magnesium citrate
This organic compound is the best absorbent source of magnesium due to its strongest similarity to compounds found in food. Organic magnesium compounds outperform inorganic compounds in terms of solubility, which is much higher for magnesium citrate when compared to its inorganice counterparts. This significantly increases the absorbance of magnesium from such a source and can be as high as 90%.
Magnesium milk
It is an organic compound of magnesium. Research indicates a comparable bioavailability of this compound with inorganic compounds.
Magnesium carbonate
It is an inorganic salt of magnesium, and the absorption of magnesium in the form of this type of non-organic compounds ranges from 10 to 16%, which is why it is not the best choice in terms of absorption, but due to its antioxidant properties, it is used in people with indigestion and gastrointestinal reflux. The spectrum of action of magnesium is very broad and the participation in numerous enzymatic reactions of the human body makes this ion necessary for the proper functioning of our body.
