The most exciting brain discovery over the past several decades is the ability of the brain to regenerate, or create new neurons, a process called neurogenesis. Also important is the discovery, or at least confirmation, of the brain’s neuroplasticity, that is its ability to re-wire itself and work around damaged, dysfunctional if not dead areas induced by stroke, head traumas, infections, calcification, excess alcohol and stress (cortisol), and just wear and tear.