From 2003: Oral Magnesium Supplementation Improves Insulin Sensitivity and Metabolic Control in Type 2 Diabetes

Not the magnesium used in the study at hand

The study was done in northern Mexico and all participants were taking glibenclamide, a sulfonylurea known as glyburide in the U.S. Importantly, study participants had low blood magnesium levels at the outset.

So if you’re not a hypomagnesemic Mexican taking glibenclamide, results may not apply to you.

Nevertheless, results were impressive. Compared to the control group, magnesium supplementation…

  • reduced insulin resistance
  • fasting glucose was 144 mg/dl (185 in controls)
  • Hemoglobin A1c was 8% (10% in controls)

The experiment lasted 16 weeks and the specific form of magnesium used was magnesium chloride solution.

Maybe we should be checking magnesium levels more often. BTW, magnesium supplements are difficult for our bodies to absorb. I know of at least three magnesium compounds: oxide, citrate, and chloride. There are probably others. Degree of absorption varies from one to the other. Adding a supplement on top of kidney impairment could cause toxicity.

The researchers conclude:

Oral supplementation with MgCl2 solution restores serum magnesium levels, improving insulin sensitivity and metabolic control in type 2 diabetic patients with decreased serum magnesium levels.

Source: Oral Magnesium Supplementation Improves Insulin Sensitivity and Metabolic Control in Type 2 Diabetic Subjects | Diabetes Care

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