Aging, exposure to brain toxins, nutritional deficiencies & other factors contribute to memory loss & deterioration of other mental capabilities. Research shows certain nutrients & phytochemicals (Alpha GPC, Vinpocetine, Huperzine-A, Pregnenolone, Phospholipids, DHA, Bacopa Monniera, Ginkgo Biloba, etc.) improve short & long term memory, increase mental acuity & concentration, improve learning abilities & mental stamina, reduce fatigue, improve sleep, mood, vision & hearing.