Brigid TitgemeierBeingBrigid Functional Nutrition · Transforming Women's Health Using Food as Medicine

Magnesium’s Surprising Effect on Blood Sugar

30 May 2026 · 1 min

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In this brief monologue, Brigid Titgemeier highlights a body of research examining magnesium supplementation as a strategy for improving blood sugar control. She references a meta‑analysis of multiple clinical trials lasting 1–6 months, involving adults aged 30–64 of both sexes. The analysis found that long‑term magnesium intake produced a small but statistically significant reduction in fasting insulin levels and enhanced insulin sensitivity, but these benefits were pronounced primarily in participants who were at risk for, or already diagnosed with, diabetes. In contrast, individuals without diabetes did not experience notable insulin reductions. The overall message is that magnesium may be a modest adjunct for glycemic management in at‑risk populations.

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Another very interesting category of research is magnesium for blood sugar. This has been studied in a number of different research studies showing a small but significant improvement in blood sugar and insulin sensitivity. So one paper showed that decreases in fasting insulin appear to occur over long-term supplementation with magnesium in people that are at risk for diabetes or already have the disease state. So they found that decreases in insulin may not happen in people who don't have diabetes. This was a meta-analysis that was conducted looking at research studies that had been done between 1 to 6 months of time with the average age between 30 to 64 happening in both men and women. And they found that decreases in fasting insulin were the most significant for people who were at risk for diabetes or already had diabetes.