Can the RIGHT Form of Magnesium REALLY Boost Brain Performance, Reverse Cognitive Decline & Protect Against Alzheimer's? with Dr. Guosong Liu

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Apr 9, 2026

Dr. Guosong Liu, neuroscientist who developed magnesium L‑threonate (Magtein), shares his two‑decade journey from MIT to clinical trials. He discusses how this form of magnesium enters the brain, its effects on synaptic plasticity, dosing and bioavailability, clinical results reversing cognitive decline, and impacts on sleep architecture and stress in short and longer time frames.

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ANECDOTE

Host Self-Tested Magtein Before Interview

Ben Greenfield shared he took 140 mg of magnesium L-threonate before the podcast to test effects.
He reported improved attention and executive function during the interview later the same day.

INSIGHT

Magnesium L-threonate Is The Brain-Penetrant Form

Magnesium L-threonate (Magtein) uniquely elevated brain magnesium among tested salts and crosses into the brain.
Liu's team synthesized many magnesium salts and found magnesium L-threonate was the only one that effectively raised brain magnesium.

ADVICE

Use The Clinically Studied Low Dose

Start with a clinically studied dose: ~2 g Magtein daily (≈140 mg elemental magnesium) rather than high-dose generic magnesium.
Liu emphasizes higher bioavailability means you need far less elemental magnesium to raise brain levels.

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Full Show Notes: bengreenfieldlife.com/magteinpodcast

In this episode with neuroscientist Dr. Guosong Liu, you’ll explore his accidental discovery at MIT's Center for Learning and Memory that led him down a two-decade journey into brain magnesium, synaptic plasticity, and cognitive decline. That research ultimately resulted in the invention of Magtein® (magnesium L-threonate), a compound he engineered to cross the blood-brain barrier in a way other magnesium forms cannot, with clinical trials showing a reversal of nine years of cognitive decline, measurable shifts in sleep architecture, stress reduction in as little as three days, and meaningful improvements in prefrontal cortex function at just 140 milligrams per day. Dr. Liu also shares what his current Alzheimer's prevention research looks like.

Dr. Liu is a world-renowned neuroscientist whose pioneering research on brain magnesium has transformed our understanding of cognitive function and synaptic plasticity. With more than 25 years of neuroscience expertise, he previously served on the faculty at MIT's Picower Institute for Learning and Memory, founded the Center for Learning and Memory at Tsinghua University, and earned his Ph.D. in Neurophysiology from UCLA. His translational research has bridged laboratory discovery and human clinical application, resulting in multiple trials demonstrating Magtein's efficacy in supporting cognitive performance.

Magtein is the patented, clinically studied form of magnesium L-threonate designed to cross the blood-brain barrier and support memory, focus, mood, sleep quality, and stress resilience. Featured in more than 400 products across 40-plus countries, it is the global standard in brain-support magnesium nutrition.

Ready to give your brain magnesium it can actually use?

You can discover more about Magtein and find a brand that carries it here.

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