In a placebo-controlled study, individuals with mild cognitive decline who took magnesium threonate improved their cognitive age by an average of 8 years over three months, compared to a 2-year improvement in the placebo group.

“l three and eight is a transporter that gets magnesium into the brain much more easily so normally if you take magnesium it's not you know going to get too much in the brain there is actually some interesting clinical data in humans suggesting that magnesium l3 and 8 in patients with mci improve symptoms”