Elevation of brain magnesium prevents and reverses cognitive deficits and synaptic loss in Alzheimer's disease mouse model
Key Finding
Magnesium L-threonate uniquely elevated brain magnesium, preventing cognitive deficits and restoring synaptic density.
Plain-English Summary
This preclinical study examined magnesium L-threonate (MgT) for its unique ability to elevate brain magnesium levels in Alzheimer's disease mouse models. MgT was compared to other magnesium forms that do not effectively cross the blood-brain barrier.
MgT supplementation prevented and reversed cognitive deficits, reduced beta-amyloid plaques, and restored synaptic density in the hippocampus and prefrontal cortex. These improvements were accompanied by enhanced synaptic plasticity and NMDA receptor function.
Magnesium L-threonate was developed specifically because conventional magnesium supplements poorly penetrate the blood-brain barrier. By effectively raising brain magnesium, MgT enhances synaptic connections, improves memory processes, and supports long-term potentiation - the cellular basis of learning. This study provided the foundation for human trials showing memory benefits in older adults.