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Magnesium Deficiency

magnesium
Bananas Are a Good Source of Natural Magnesium.

What Is Magnesium?

[dropcap]M[/dropcap]agnesium is an essential mineral predominantly found in the body within cells, where it is vital for their functions.

Here is a summary of what magnesium does in our body:

  1. Co-factor for over 300 enzymes involved in the metabolism of food components and synthesis of many compounds.
  2. Required for nerve transmission.
  3. Required for muscle activity (acts to relax muscles in opposition to calcium which acts to contract).
  4. Acts to maintain heart rhythm.
  5. Required for membrane transport and interactions.
  6. Required for glucose metabolism and energy production within cells.
  7. Component of bone mineralization and tooth formation.
  8. Plays a key role in calcium and phosphorus metabolism and management by parathyroid hormone.
  9. Maintains the structural and functional integrity of vital eye tissues such as lens.1

Only 1% of magnesium is found in blood, but the body must keep blood levels of magnesium constant.

What Is Magnesium Deficiency In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Agarwal R, Iezhitsa I, Agarwal P, Spasov A. Magnesium deficiency: does it have a role to play in cataractogenesis? Exp Eye Res. 2012 Aug; 101:82-9. doi: 10.1016/j.exer.2012.05.008. [↩]

Hypomagnesemia (Low Blood Level of Magnesium)

hypomagnesemiaWhat Is Hypomagnesemia?

[dropcap]H[/dropcap]ypomagnesemia means the level of magnesium in the bloodstream is too low to meet metabolic needs of the body for this mineral.

Q: What are the metabolic needs of the body for magnesium?

A: The metabolic needs of the body for magnesium are numerous which gives rise to very many distressing symptoms when this mineral is deficient.

A major function of magnesium is to stabilize the structure of an enzyme called adenosine triphosphate (ATP) within cells for the production of energy. In the brain, magnesium plays important roles in all the major metabolisms such as oxidation-reduction and regulation of ions (charged minerals).1

What Is Hypomagnesemia In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Bourre JM. Effects of nutrients (in food) on the structure and function of the nervous system: update on dietary requirements for brain. Part 1: micronutrients. J Nutr Health Aging. 2006 Sep-Oct;10(5):377-85. [↩]

Tetany

Trouseau Testing For Tetany.
Trouseau Testing For Tetany. Courtesy Digplanet.

What Is Tetany?

[dropcap]T[/dropcap]etany is a painful feature of low blood calcium or low blood magnesium causing hyperexcitability of all nerves which in turn stimulates involuntary sudden, intermittent and repetitious tonic spasms of muscles. Tonic spasms are steady rather than jerky.

Causes include low function of the parathyroid glands which regulate calcium blood levels, vitamin D deficiency which inhibits calcium absorption from the gut that leads to calcium deficiency, and alkalosis.

In alkalosis, the chemical pH (acid/alkaline measure) of blood is too high, or alkaline, which inhibits adequate free calcium ions from being available for cell use.

Q: Why do low blood levels of calcium or magnesium cause muscles to spasm?

A: Calcium controls the readiness of muscle to respond to nerve stimulation. In muscle action, calcium and magnesium are minerals that oppose each other. Calcium allows a muscle to contract while magnesium allows it to relax. Inadequate levels of these opposing minerals affect the ability of muscles to properly function.

A simple test for tetany is called Trouseau’s named after the doctor who developed it. A blood pressure cuff is placed on an upper arm as usual and pumped up to a pressure sufficient to stop blood flow.  The pressure must be held for 3 minutes. A positive result is shown in the above photo of carpopedal spasm: the wrist and hand flexes inward while the fingers extend (opposite of wrist and hand) and the thumb goes against the palm.

What Is Tetany In Celiac Disease and/or Gluten Sensitivity?

Hypoparathyroidism, Idiopathic

Parathyroid gland anatomyWhat Is Idiopathic Hypoparathyroidism?

[dropcap]I[/dropcap]diopathic hypoparathyroidism is a metabolic condition that results from reduced secretion or impaired action of parathyroid hormone (PTH) which results in a combination of low calcium and elevated phosphorus levels in the body.

Calcium and phosphorus are minerals that act in opposition to each other in the body. Idiopathic means the cause is not known.

Parathyroid hormone is produced by the four pea sized parathyroid glands that are located on the thyroid gland in the front of the neck. Partly because the thyroid and parathyroid glands share the same anatomic place in the body and partly because they have similar names, they are often confused although they have completely different actions.

Q: What does parathyroid hormone do in the body?

A: This vital hormone maintains a correct balance of calcium and phosphorous in the bloodstream and ultimately has an effect on all organs because of the complexity of intracellular calcium physiology.1 

Parathyroid hormone is required to sustain life, therefore undetected or misdiagnosed hypoparathyroidism may pose a significant threat to health outcomes, as its presence may increase disease and mortality in affected individuals.

The clinical consequences of parathyroid hormone deficiency or impaired receptor action involve many body functions. In some patients, however, its manifestation may be non-specific, and in these cases the correct diagnosis may be easily missed.

Digestive manifestations of hypoparathyroidism are few and consist mainly of steatorrhea due to insufficient meal-stimulated cholecystokinin secretion by the duodenal mucosa.2

Laboratory measurements show hypocalcemia (low blood calcium level), hyperphosphatemia (high blood phosphate level), and inappropriately low or undetectable parathyroid hormone levels. Treatment consists of oral calcium supplementation and vitamin D derivatives.3

Idiopathic hypoparathyroidism is rare, although there is a growing incidence of the autoimmune form of hypoparathyroidism, which may occur in combination with other autoimmune diseases such as celiac disease.

What Is Idiopathic Hypoparathyroidism In Celiac Disease and/or Gluten Sensitivity?

Sources:
  1. Abboud B, Daher R, Boujaoude J. Digestive manifestations of parathyroid disorders. World J Gastroenterol. 2011 Sep 28;17(36):4063-6. doi: 10.3748/wjg.v17.i36.4063. [↩]
  2. Abboud B, Daher R, Boujaoude J. Digestive manifestations of parathyroid disorders. World J Gastroenterol. 2011 Sep 28;17(36):4063-6. doi: 10.3748/wjg.v17.i36.4063. [↩]
  3. Krysiak R, Handzlik-Orlik G, Kedzia A, Machnik G, Okopień B. Hypoparathyroidism: the present state of art. Wiad Lek. 2013;66(1):18-29. [↩]