If new neurons are being formed every day in our brain, how can we hold onto these cells and not let them simply die away?

如果大脑中新生神经元每天都在不断形成，那我们怎样才能维持这些细胞，不让它们轻易凋亡呢？

youdao

However,brain cells of Alzheimer's victims die and are not replaced.

VOA: special.2009.09.15

The combination of strategy and memory in bridge challenges the brain to learn new information and exercises cells so they don't die, Postal says.

CNN: Helpful ways to boost your memory