Betterhumans carries this article on recent work into the genetic basis of aging in the brain. This is very low-level, early, fundamental research, but it is turning up interesting results already. It is essential for us to gain a better understanding of the mechanisms that cause changes in our bodies with age. With this understanding, researchers are far less effective in their search for regenerative and anti-aging medicine. With greater understanding, we can more reliably develop effective therapies to combat aging.