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Original Research
Higher magnesium intake reduces risk of impaired glucose and insulin metabolism, and progression from prediabetes to diabetes in middle-aged Americans
Adela Hruby, James B. Meigs, Christopher J. O’Donnell, Paul F. Jacques, Nicola M. McKeown
Diabetes Care 2013 Oct; DC_131397. https://doi.org/10.2337/dc13-1397
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Abstract

Objective: To assess 7-yr associations between magnesium intake and incident prediabetes and/or insulin resistance (IR), and progression from these states to type 2 diabetes.

Research Design and Methods: In 2,582 community-dwelling participants 26–81 yrs old at baseline, magnesium intake and risk of incident “metabolic impairment,” defined as impaired fasting glucose (≥5.6–<7.0 mmol/L), impaired glucose tolerance (2-hr postload glucose ≥7.8–<11.1 mmol/L), IR, or hyperinsulinemia (≥90th percentile of HOMA-IR or fasting insulin, respectively), was estimated among those with normal baseline status, and risk of incident diabetes was estimated among those with baseline metabolic impairment. In participants without incident diabetes, we examined magnesium intake in relation to 7-yr changes in fasting and postload glucose and insulin, IR, and insulin sensitivity.

Results: After adjusting for age, sex, and energy intake, compared to those with the lowest magnesium intake, those with the highest intake had 37% lower risk of incident metabolic impairment (P trend=0.02), while in those with baseline metabolic impairment, higher intake was associated with 32% lower risk of incident diabetes (P trend=0.05). In the combined population, the risk in those with the highest intake was 53% (P trend=0.0004) of those with the lowest intake. Adjusting for risk factors and dietary fiber attenuated associations in the baseline normal population, but did not substantially affect associations in the metabolically impaired. Higher magnesium intake tended to associate with lower follow-up fasting glucose and IR, but not fasting insulin, postload values, or insulin sensitivity.

Conclusions: Magnesium intake may be particularly beneficial in offsetting risk of developing diabetes among those at high risk. Magnesium’s long-term associations with non-steady state (dynamic) measures deserve further research.

  • Received June 12, 2013.
  • Accepted September 29, 2013.
  • © 2013 by the American Diabetes Association.

Readers may use this article as long as the work is properly cited, the use is educational and not for profit, and the work is not altered. See http://creativecommons.org/licenses/by-nc-nd/3.0/ for details.

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Diabetes Care: 44 (2)

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February 2021
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Higher magnesium intake reduces risk of impaired glucose and insulin metabolism, and progression from prediabetes to diabetes in middle-aged Americans
Adela Hruby, James B. Meigs, Christopher J. O’Donnell, Paul F. Jacques, Nicola M. McKeown
Diabetes Care Oct 2013, DC_131397; DOI: 10.2337/dc13-1397

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Higher magnesium intake reduces risk of impaired glucose and insulin metabolism, and progression from prediabetes to diabetes in middle-aged Americans
Adela Hruby, James B. Meigs, Christopher J. O’Donnell, Paul F. Jacques, Nicola M. McKeown
Diabetes Care Oct 2013, DC_131397; DOI: 10.2337/dc13-1397
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© 2021 by the American Diabetes Association. Diabetes Care Print ISSN: 0149-5992, Online ISSN: 1935-5548.