Higher magnesium intake is associated with lower odds of insomnia symptoms in adults without diabetes
In Puerto Rican adults without diabetes, higher total magnesium intake (per 100 mg/d) was associated with 58% lower odds of insomnia symptoms (OR 0.42, 95% CI 0.23-0.79), and magnesium supplement users had 63% lower odds compared to nonusers (OR 0.37, 95% CI 0.17-0.81). This association was not observed in participants with diabetes (P-interaction < 0.05).
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Higher magnesium intake is associated with lower odds of insomnia symptoms in adults without diabetes The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 34/100 (low).
The Claim
Higher magnesium intake is associated with lower odds of insomnia symptoms in adults without diabetes
This conclusion is most relevant to: Puerto Rican adults without diabetes from the Boston Puerto Rican Health Study (n=613 for dietary magnesium analysis).
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Diabetes modifies the association between magnesium and insomnia, but not depressive symptomatology, in Puerto Rican adults: a prospective cohort study. (The American journal of clinical nutrition, 2026) —
How It Works
The proposed biological pathway:
- ▸Magnesium may regulate sleep through modulation of GABA receptors
- ▸Magnesium influences melatonin production and circadian rhythms
- ▸Magnesium reduces stress-induced cortisol release
- ▸Result: Improved sleep quality and reduced insomnia symptoms
Who Might Benefit
Evidence fit by population:
- ▸Puerto Rican adults without diabetes from the Boston Puerto Rican Health Study (n=613 for dietary magnesium analysis)
Recommended Dose
Per 100 mg/d increase in total magnesium intake
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Observational study design cannot establish causality
- ▸Findings limited to Puerto Rican adults and may not generalize to other populations
- ▸Serum magnesium showed no association, suggesting dietary intake may reflect different biological processes
Frequently Asked Questions
Does magnesium help with insomnia in everyone?▼
No, this study found that higher magnesium intake was associated with lower odds of insomnia only in adults without diabetes. No significant association was seen in participants with diabetes.
What type of magnesium was studied?▼
The study examined total magnesium intake from food and supplements, as well as magnesium from food alone and serum magnesium levels. Magnesium supplement use was also analyzed separately.
How much magnesium was associated with benefit?▼
Each 100 mg/day increase in total magnesium intake was associated with 58% lower odds of insomnia symptoms in adults without diabetes.
Was magnesium associated with depression in this study?▼
No clear association was found between magnesium and overall depressive symptoms (CES-D score), though higher magnesium intake from food was linked to less low positive affect, a sub-dimension of depression.
References
- 1.Chen F, Mangano KM, Scott TM, Li W, Falcón LM, Gao X, Garelnabi M, Tucker KL. “Diabetes modifies the association between magnesium and insomnia, but not depressive symptomatology, in Puerto Rican adults: a prospective cohort study..” The American journal of clinical nutrition, 2026. PMID: 41862003 DOI: 10.1016/j.ajcnut.2026.101285