Stacy Sims on Magnesium

Evening, 30-60 min before bed

4 episodes · 6 references · 2026

AI-generated summary

- Sims recommends magnesium primarily for sleep, emphasizing forms that cross the blood-brain barrier (bisglycinate, threonate) - Advises supplementing only if deficient, and warns against magnesium oxalate due to laxative effects - No evidence of personal consumption or specific dosing guidance discussed

Benefits

- Magnesium supports sleep by promoting muscle relaxation and reducing contractions - Facilitates parasympathetic activation, which is the mechanism behind improved sleep quality - Specifically highlights the sleep benefit as the primary reason to consider magnesium

Best Practices

- Recommends magnesium bisglycinate or threonate as preferred forms that cross the blood-brain barrier - Advises supplementing only if you know you are low in magnesium - Threonate specifically recommended for sleep via parasympathetic activation

Cautions

- Warns against magnesium oxalate due to its laxative effect - Stresses being "very conscious" about form selection — look specifically for bisglycinate or glycinate - No warnings about upper dose limits or drug interactions discussed

View full Magnesium page with research, safety, and pricing →

Why They Take It (2)

BenefitMagnesium 3:46

“Magnesium is beneficial for sleep primarily because of our muscle contractions; we want to have a relaxation of everything.”

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BenefitMagnesium 4:29

“It has magnesium. It has a whole bunch of things that help you sleep and it's really easy to digest.”

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How to Take It (3)

Best practiceMagnesium 6:02

“If you know that you are low in magnesium, then you take it.”

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Best practiceMagnesium 4:04

“We need a magnesium that crosses the blood-brain barrier to help, and this is a bisglycinate.”

Collagen, Magnesium, and Creatine for Women: What Works, What Doesn’t, and How to Use Them

Best practiceMagnesium 10:01

“If I were, I would look for a magnesium threonate because that's the only one that crosses blood brain barrier and can actually help with parasympathetic activation, which is what you're wanting for sleep.”

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