Key points from article :
Neurogenesis is the production of new neurons.
In mice it declines with age and virtually ceases in the mature brain.
Young and old human brains produce thousands of new neurons.
But older brains have less vascular development and form less new connections.
Neurogenesis was tracked in 28 healthy donors ranging from 14 to 79 years old.
Further study needed to investigate impact of exercise, diet, and medications.
The study was published in the Cell Stem Cell journal.
