And then one day, a magic day he passed my way


When we age, our brain gradually looses the ability to give birth to new neurons (neurogenesis). This sad decline is linked to impairments in cognitive functions such as learning and memory. The brain, like any other organ, feeds off of nutrients and chemicals in the blood to keep it going. This made researchers wonder: is something in the blood affecting neurogenesis as we age?

To explore this, researchers hooked up the circulation of young and old mice (with young-young & old-old pairing as control) so that their blood intermixed.[…] Several weeks after the surgery, researchers examined the animals’ brains to look for changes in neurogenesis. Young mice, when linked with older mice, had significantly fewer newly born neurons and neural progenitor cells than young-young controls.

{ Neuroxia | Continue reading }

photo { Bill Brandt }