The Study
Magnesium Deficiency and Its Impact on the Development of Insulin Resistance in Obese Individuals
This study looked at a group of obese people and found that those with less magnesium in their blood also tended to have higher blood sugar and trouble using insulin. But it didn’t change anyone’s diet or give them supplements, so we can’t say magnesium is the cause — maybe other things, like what they eat or how much they move, are behind both.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
This study looked at obese people and found that those with less magnesium in their blood also had higher blood sugar and worse insulin resistance.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 544 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — people with low magnesium had much worse blood sugar control, even if they were the same weight or age as others.
- 2Average magnesium: 1.72 mg/dL; lower magnesium linked to higher HOMA-IR (r = -0.47), fasting glucose (r = -0.42), HbA1c (r = -0.38), and insulin (r = -0.44).
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
SAS Journal of Medicine
Year
2025
Authors
Imran Chowdhury, Faruq Hossain, Umme Hosna Taiaba
Related Content
Claims (6)
Low magnesium levels decrease the activity of insulin receptor tyrosine kinase, which reduces the effectiveness of insulin signaling.
In adults with obesity, lower levels of magnesium in the blood are associated with higher HbA1c levels, indicating worse long-term blood sugar control.
In adults with obesity, lower levels of magnesium in the blood are consistently linked to higher levels of fasting insulin.
In obese individuals, serum magnesium levels were low and nearly half had diabetes, suggesting a relationship between magnesium levels and diabetes in this group.
In obese adults, lower levels of magnesium in the blood are linked to higher levels of insulin resistance, as shown by elevated HOMA-IR, fasting glucose, and HbA1c measurements.
Obese adults with low blood magnesium levels have higher markers of insulin resistance, even when accounting for body weight and age.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.