But new research finds one factor that influences the rate at which our brains age is largely outside our control: our socioeconomic status.
"Engaging and resourceful environments associated with higher socioeconomic status may provide a buffer or delay against aging," the researchers write. "Inadequate health conditions associated with lower socioeconomic status environments (such as exposure to toxins and poorer nutrition), together with continual stress, may accelerate the aging process."
Using neuroimaging, the researchers evaluated participants' brains in two ways, measuring "functional network organization and cortical gray matter thickness." They found both measures demonstrated greater aging in people of lower socioeconomic status, even after accounting for demographic differences and personal health.
A 2014 study found African-Americans age more rapidly than whites, presumably due to the stress of dealing with racism.We've long been told that a mind is a terrible thing to waste. Perhaps we need to remember it's also a terrible thing for a mind to waste away.