THE MAGNESIUM FOR BRAIN HEALTH AND COGNITIVE FUNCTION. Magnesium is an essential mineral with so many health benefits, but one of its lesser known benefits is the critical role it plays in brain health. Yes! Magnesium affects how well you mentally process information, how good your memory is, and how well you sleep. Unfortunately, many of us don’t eat enough magnesium-rich foods, such as whole grains, nuts, seeds, and leafy greens. To worsen matters, stress, lack of sleep, and caffeine and alcohol use can cause your body to excrete magnesium. As a result, an astonishing 48% of us are deficient in this important mineral (Duff, 2013). Taking a magnesium supplement seems like an obvious solution. But most of them can’t cross the blood-brain barrier, meaning little of the magnesium they contain actually makes it to your brain. Magtein is different. Magtein is the only form of magnesium shown in human clinical research to raise magnesium levels in the brain (Slutsky et al., 2010). It has been clinically shown to support memory, cognition, and attention in adults from age 18 to age 87.