The Claim

In healthy adults with self-reported poor sleep, baseline dietary magnesium intake is inversely correlated with the improvement in insomnia severity after 4 weeks of magnesium bisglycinate supplementation (Spearman's rho = -0.25, p = 0.036), indicating that lower baseline dietary magnesium intake is associated with greater improvement.

Source: Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep: A Randomized, Placebo-Controlled Trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
90score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

In adults who don't sleep well, we looked at how much magnesium they get from their diet. After taking a magnesium supplement for 4 weeks, we found that people who had less magnesium in their diet saw more improvement in their sleep problems than those who already had plenty of magnesium.

See the scientific wording

In healthy adults with self-reported poor sleep, baseline dietary magnesium intake is inversely correlated with the improvement in insomnia severity after 4 weeks of magnesium bisglycinate supplementation (Spearman's rho = -0.25, p = 0.036), suggesting that individuals with lower dietary magnesium intake may benefit more from supplementation.

Why this might work

Magnesium and glycine together calm the brain and body. They help the brain slow down by making the 'brakes' work better, and they help muscles relax. Glycine also lowers body temperature, which signals the body to sleep. If a person didn't have enough magnesium before, these effects are stronger because the body is more ready to use the extra magnesium, so sleep improves more.

Suggested mechanismbased on 1 study

What the research says

1 study

  1. Study: Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep: A Randomized, Placebo-Controlled Trial

    The study showed that taking magnesium helped people sleep a little better, and the people who didn't usually get enough magnesium from food seemed to benefit even more, just like the claim says.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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