Right to Adequate Magnesium Levels

“Subclinical magnesium deficiency increases the risk of numerous types of cardiovascular disease, costs nations around the world an incalculable amount of healthcare costs and suffering, and should be considered a public health crisis.” — DiNicolantonio et al., Open Heart (BMJ), 2018

A century of ignored warnings

The history of magnesium deficiency is the history of a slow-motion scandal. As early as 1926, magnesium was recognized as an essential nutrient for life. In 1936, a report submitted to the US Senate (Senate Document 264) already raised the alarm: agricultural soils were losing their minerals, including magnesium, and the foods they produced were no longer properly nourishing the population. That report is almost 90 years old. Nothing structural has changed.

In 1971, Professor Jean Durlach (1925–2017), of the Université Pierre et Marie Curie in Paris, organized the first International Symposium on Magnesium in Vittel and founded the SDRM (Société pour le Développement de la Recherche sur le Magnésium). In 1980, Dr Mildred Seelig published her monumental work Magnesium Deficiency in the Pathogenesis of Disease, in which she meticulously documented the role of magnesium deficiency in cardiovascular, renal, neuromuscular, and immune diseases.

In 2018, DiNicolantonio and colleagues published in Open Heart (BMJ) a paper whose title says it all: “Subclinical magnesium deficiency: a principal driver of cardiovascular disease and a public health crisis.” In 2025, a global review published in the International Journal of Vitamin and Nutrition Research confirmed that 2.4 billion people — 31% of the world’s population — still do not meet the recommended magnesium intake. A century of warnings. And the world keeps sleeping.

Why standard blood tests are a trap

The pool and the tap

To understand the testing problem, imagine the body as a large house with an enormous underground pool (the cells, bones, muscles) and a tiny tap running outside (the blood). The standard blood test — serum magnesium — only measures the water from the tap. Yet less than 1% of total body magnesium circulates in the blood. The remaining 99% is locked inside cells, bones, and muscles.

Worse still: the body is programmed to maintain a “normal” blood level at all costs. When blood magnesium begins to fall, the organism draws on its bone and muscle reserves to refill the tap. Result: a person can be profoundly deficient in their cells, bones, and muscles, and yet show a “normal” result on their blood test.

What the numbers say

Dr Schwalfenberg, of the University of Alberta, puts it plainly:

“An individual may be profoundly deficient in total body or intracellular Mg required for various cellular biochemical processes yet have a SMC [serum magnesium concentration] within normal range.”

One study of patients being treated for hypertension showed that 80% of them had magnesium depletion confirmed by a loading test, even though their blood magnesium was normal or even elevated. Among patients hospitalized in intensive care units, half are deficient in intracellular magnesium despite a normal serum result.

A finding published in 2010 shows that of laboratory analyses ordered, only 10% of cases of hypomagnesaemia were detected at the physician’s request — the remaining 90% were found incidentally during routine tests. In other words, physicians are not even looking.

Real tests exist — but are not used

More reliable tools exist: the magnesium loading test (intravenous injection followed by urinary collection), erythrocyte (red blood cell) magnesium, mononuclear cell magnesium, muscle biopsy, and NMR spectroscopy. But these tests are more expensive, more complex, and above all — they are not routinely available to most clinicians. The result is a vicious circle: you cannot diagnose what you are not looking for, with a tool that shows nothing anyway.

Magnesium: far more than “300 enzymatic reactions”

The real figure: over 800

The phrase “magnesium is involved in more than 300 enzymatic reactions” has become a mindlessly repeated mantra. But it is outdated. Current enzyme databases show that magnesium is a direct cofactor for more than 600 enzymes and a necessary activator for 200 additional enzymes. A total of more than 800 enzymatic systems that depend on this single mineral. It is also estimated that 3,571 human proteins potentially bind magnesium.

To put this in perspective: without enzymes, DNA and RNA synthesis would take 78 million years; the production of haemoglobin, 2.3 billion years — half the age of the Earth. Enzymes are the accelerators of all the chemistry of life. And magnesium is the key that starts an enormous number of these accelerators.

ATP: the currency of life’s energy

ATP (adenosine triphosphate) is the molecule that every cell in the body uses as its “energy currency.” Every time a muscle contracts, a neuron transmits a signal, a cell divides, or a protein is manufactured — it is ATP that provides the necessary energy.

Here is the crucial fact that almost no one communicates to the general public: ATP does not exist in its active form without magnesium. The ATP molecule is unstable on its own. To function, it must bind to a magnesium ion, forming the Mg-ATP complex. This form — and only this form — is biologically active and usable by the body. All energy-requiring reactions in the body have an absolute requirement for magnesium:

“All enzymatic reactions involving ATP have an absolute requirement for magnesium.”

Imagine ATP as a banknote. Without magnesium, this note is not recognized by the cellular “cash registers.” It is there, but unusable.

A staggering inventory of associated diseases

The list of medical conditions linked to magnesium deficiency is so long that it becomes difficult to believe. Yet each of these associations is documented in peer-reviewed scientific literature.

Cardiovascular disease

Patients in the highest quartile of magnesium intake have a 77% reduced risk of sudden cardiac death. A meta-analysis of more than 500,000 participants shows a relative risk of cardiovascular disease of 0.64 for those with the highest serum magnesium levels.

Diabetes and metabolic syndrome

Magnesium is involved in insulin signalling and glucose metabolism. An increase of 100 mg/day of magnesium is associated with a 15% reduction in the risk of type 2 diabetes. Among diabetics, 88.6% consume less than the recommended intake of magnesium.

Bone health

Magnesium is a structural component of hydroxyapatite, the primary bone mineral. It is also essential for the activation of vitamin D: without sufficient magnesium, vitamin D cannot be converted to its active form — a phenomenon called “magnesium-dependent vitamin D resistance.” Children with rickets who did not respond to massive doses of vitamin D have been cured by magnesium supplementation.

Mental health and neurological function

Magnesium is necessary for the conversion of tryptophan to serotonin (the “feel-good” neurotransmitter). It is also a natural antagonist of NMDA receptors — the same mechanism of action as ketamine, now used as an emergency antidepressant.

Health policies facing their own failure

“Eat a balanced diet”: advice that has become hollow

Since 1940, the magnesium content of foods has dropped dramatically. In the United Kingdom, vegetables have lost 24% of their magnesium, whole milk 21%, cheddar cheese 38%, parmesan 70%. White flour loses 82% of its magnesium during refining, polished rice 83%, white sugar 99%. Intensive agriculture has reduced magnesium content in crops by 20 to 40% over the past century, due to the massive use of nitrogen-phosphorus-potassium (NPK) fertilizers that do not include magnesium.

To say today “eat a balanced diet” for magnesium is to tell someone to fill a bucket with a tap whose flow has been halved. Even a diet rich in fruits, vegetables, and whole grains no longer necessarily provides the same magnesium intake as it did 70 years ago.

The financial cost of inaction

In Israel, a study by the Taub Center calculated that simply adding magnesium to desalinated water could generate savings of 83 to 253 million shekels per year by reducing type 2 diabetes and ischaemic stroke. In the United States, one analyst estimated that the cost of inaction on magnesium deficiency exceeds $86 billion per year. Meanwhile, magnesium supplementation costs a few cents per day.

The vicious cycle of medications

Many commonly prescribed medications worsen magnesium deficiency: proton pump inhibitors (PPIs), thiazide and loop diuretics, certain antibiotics, immunosuppressants, chemotherapy agents, corticosteroids, oral contraceptives. Dr Carolyn Dean describes a typical scenario:

A stressed patient consults for symptoms that are in fact those of magnesium deficiency (fatigue, insomnia, tension); a diuretic is prescribed that drains even more magnesium; at the next appointment, cholesterol is elevated (magnesium regulates the HMG-CoA reductase enzyme); a statin is added; then a diabetes medication — and the patient ends up on five medications, each worsening the original problem.

What the experts say — in their own words

Dr Mildred S. Seelig (1920–2004) — The pioneer

Professor of nutrition and preventive medicine, Mildred Seelig devoted more than 40 years to documenting the impact of magnesium deficiency. Her 1980 work, Magnesium Deficiency in the Pathogenesis of Disease, remains a foundational reference:

“Until magnesium clinical methodology is improved and made available, the importance of correcting magnesium deficiency in man’s diet and of preventing intensification of a deficit when needs are increased by physiologic or pathologic processes and drugs will have to be inferential.”

That warning was issued more than 45 years ago.

Prof Jean Durlach (1925–2017) — The founder

French neurologist and biochemist, Durlach created the international scientific infrastructure for the study of magnesium. He wrote in 2004:

“About 20% of the population consumes less than two-thirds of the RDA for Mg. Women, particularly, have low intakes.”

He issued warnings for more than 45 years. He died in 2017 without the world having acted.

Dr James J. DiNicolantonio — The call for urgency

Preventive cardiology researcher at Saint Luke’s Mid America Heart Institute, DiNicolantonio classified subclinical magnesium deficiency as a public health crisis in 2018:

“Because serum magnesium does not reflect intracellular magnesium, the latter making up more than 99% of total body magnesium, most cases of magnesium deficiency are undiagnosed. […] Subclinical magnesium deficiency increases the risk of numerous types of cardiovascular disease, costs nations around the world an incalculable amount of healthcare costs and suffering, and should be considered a public health crisis.”

Drs Schwalfenberg & Genuis (University of Alberta)

Their 2017 review, The Importance of Magnesium in Clinical Healthcare, demonstrates that Level I evidence (the highest in evidence-based medicine) supports the use of magnesium in the prevention and treatment of migraine, metabolic syndrome, diabetes, hyperlipidaemia, asthma, premenstrual syndrome, pre-eclampsia, and various arrhythmias. Despite this, the knowledge does not translate into clinical practice.

The MaGNet Network — Reference values are wrong

The international MaGNet network demonstrated that current thresholds (often 0.70–0.75 mmol/L) are too low to detect subclinical deficit. Their recommendation published in Advances in Nutrition (2022):

“Widely varying serum magnesium reference ranges render our use of this important medical tool imprecise, minimizing impacts of low magnesium status or hypomagnesemia as a marker of disease risk.”

Recommendation: set the minimum threshold at 0.85 mmol/L.

Timeline: a century of inaction

References

1. Magnesium research: a brief historical account — PubMed
2. Challenges in the Diagnosis of Magnesium Status — PMC/NIH
3. Magnesium research: from the beginnings to today — PubMed
4. Obituary Jean Durlach — SDRM Society
5. Preface — Magnesium Deficiency in the Pathogenesis of Disease, Dr. Mildred S. Seelig — mgwater.com
6. Global Dietary Magnesium Deficiency: Prevalence, Underlying Causes… — IJVNR 2025
7. DiNicolantonio et al. — Subclinical magnesium deficiency: a principal driver of cardiovascular disease and a public health crisis — Open Heart / BMJ 2018
8. Magnesium basics — PMC/NIH
9. Magnesium Metabolism — ScienceDirect
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11. Magnesium activates enzymes — magnesium.ca
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13. The pivotal role of magnesium in energy production — ATP synthesis — Formexc
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18. Going to the roots of reduced magnesium dietary intake — PMC/NIH
19. Why Is Soil Depletion a Growing Concern for Magnesium Content in Food? — Sustainability Directory
20. The Health And Economic Burden of Desalination — Taub Center
21. How Many Americans Are Magnesium Deficient? — Life Extension
22. The Magnesium Miracle: An Interview with Dr. Carolyn Dean — My Conscious Life Journal
23. Seelig & Rosanoff — The Magnesium Factor — Bookshop.org
24. Novel Scale for Clinical Identification of Adverse Magnesium-Calcium Imbalances — PMC
25. Interview With Leading Magnesium Researcher — Dr. Andrea Rosanoff PhD — YouTube
26. Nutrients, Vol. 17, Pages 3662 — Biblioteca Digital UCEM
27. MaGNet — Recommendation on an updated standardization of serum magnesium — PMC
28. Kubena & Durlach — Historical review of the effects of marginal intake — PubMed
29. The Underestimated Problem of Using Serum Magnesium Measurements — PubMed