The Good News We’re swamped with research on how to grow and maintain a bigger brain into old age. Much of the research emphasizes exercise as essential to brain health at every age. Here’s a summary of relevant baseline research, then we’ll move to some new, interesting and thought-provoking research. Background Dr. Carl Cotman and Dr. Nicole Berchtold of the University of California Institute for Brain Aging and Dementia performed research on aerobic exercise and brain health. Cotman and Berchtold concentrated on “brain-derived neurotrophic factor” (BDNF). Because, in their words “it supports the survival and growth of many neuronal subtypes, including glutamatergic neurons”. In our (very) layman understanding, BDNF is a protein that helps nerve cells do, well, a lot. Grow in particular, as well as get stronger and avoid premature cellular death. Cotman and Berchtold learned that the act of consistent exercise increased levels of BNDF in the hippocampus. This finding