This Magnesium Supplement May Help Prevent Alzheimer’s, Says Neurologist

A top neurologist is drawing attention to a lesser-known magnesium supplement that could help keep your brain sharper for longer. According to El Cronista, Dr. Alejandro Andersson, director of the Buenos Aires Institute of Neurology, recommends magnesium threonate as the “best” daily supplement for protecting cognitive function and potentially reducing the risk of Alzheimer’s disease.

Magnesium plays a big role in brain health—helping regulate nerve signals, reducing inflammation, and even preventing brain cell death. But not all magnesium supplements are created equal. Dr. Andersson highlights magnesium threonate because it can cross the blood-brain barrier, directly reaching the central nervous system—unlike other types.

Studies show magnesium threonate can enhance both short- and long-term memory by increasing synapse density. It also promotes neuroplasticity, the brain’s ability to adapt, which is crucial for learning and recovery. Animal studies even suggest this supplement may slow cognitive decline, and a 2024 study found it might ease symptoms of Alzheimer’s in mice. It’s also been linked to reduced anxiety and better sleep—both key to cognitive resilience.

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Of course, not every health claim is fully proven yet. More human studies are needed, and experts caution against exceeding the UK’s NHS-recommended upper limit of 400mg per day. The NHS warns that too much magnesium can cause diarrhea, and its long-term effects are still being studied. Still, according to the Department of Health and Social Care, a balanced diet usually covers your magnesium needs—but supplements like magnesium threonate may offer an extra brain boost if taken carefully.

If you’re passionate about your long-term wellbeing, this could be one more step toward a healthier, more alert future. As always, check with your healthcare provider first—and aim for nutrition from whole, plant-based foods whenever possible. Your brain—and the planet—will thank you.

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