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Magnesium may not be as available if have low stomach acid (seniors)

Update May 2016 - Magnesium CHLORIDE probably increases stomach acid

Investigation of Magnesium and Calcium Carbonate and Oxide supplements
All 4 of which serve as antacids. – so they decrease an already low stomach acid in seniors


Clipped from the web – July 2013


Some people's bodies may have problems making enough stomach acid, or may be taking medications that suppress acid production.


In medicine, magnesium oxide is used for relief of heartburn and sore stomach, as an antacid, magnesium supplement, and as a short-term laxative. I


Magnesium oxide cannot absorb as magnesium oxide. Instead, as with most minerals, the magnesium has to react with an acid turning it in to an absorbable salt. Problem is that many people lack sufficient levels of stomach acid as levels drop with age and there is a major over use of antacids, acid blockers (proton pump inhibitors), carbonates and oxides in supplements and alkaline waters all of which further reduce stomach acid reducing mineral absorption.

In the case of magnesium oxide, when this is combined with water it forms the highly alkaline and caustic magnesium hydroxide. This not only neutralizes stomach acid inhibiting magnesium absorption, but it also burns the intestinal wall due to its caustic nature. This is why magnesium hydroxide is used as a laxative such as Milk of Magnesia.


Some conditions known to impact magnesium availability include:
Individual variations in amount of stomach acid, commonly reduced in older adults
Excessive use of alcohol
Crohn’s disease, celiac sprue, and any disorder of the digestive or intestinal function
Kidney disorders
Genetic magnesium absorption disorders
Stress, surgery, and chronic disorders such as diabetes
Diarrhea and vomiting

http://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/ NIH

Older adults are at increased risk for magnesium deficiency. The 1999–2000 and 1988–94 National Health and Nutrition Examination Surveys suggest that older adults have lower dietary intakes of magnesium than younger adults [6,23]. In addition, magnesium absorption decreases and renal excretion of magnesium increases in older adults [4]. Seniors are also more likely to be taking drugs that interact with magnesium. This combination of factors places older adults at risk for magnesium deficiency [4]. It is very important for older adults to get recommended amounts of dietary magnesium.

See also VitaminDWiki

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