Human clinical trials using food-derived spermidine have shown it to support cognition and heart health, promote hormonal balance, improve hair growth and fullness (including eyelashes and brows), increase collagen synthesis, and strengthen nails. Studies have correlated higher plant-derived spermidine levels with a longer life. They have also shown its potential in improving fertility and restoring sleep by regulating the body's internal clock (aka circadian rhythm). Other benefits noticed by our clients include deeper, sounder sleep, gray hair reversal, enhanced energy levels, brighter, more supple skin, and improved gut health. Read our Reviews to find out more.