Las canas y el estrés

El New York Times se pregunta si Barack Obama ha encanecido últimamente. Aquí la nota.

Aquí un párrafo que relaciona las canas al estrés:

For a guy who prides himself on projecting a stress-free demeanor, the changes above his temples are speckled evidence that perhaps the psychological and physical strains of the job — never mind the long process of winning it — are in fact taking something of a toll. (Experts say stress can contribute to whitening locks.)

Aquí otro párrafo sobre el peluquero de Obama y el debate en la blogósfera si el presidente norteamericano se pinta el pelo (algunos dicen que negro para verse joven y otros que gris para verse más distinguido):

Mr. Obama’s graying is still of the flecked variety, and appears to wax and wane depending on when he gets his hair cut, which he does about every two weeks. His barber, who goes by only one name, Zariff, takes umbrage with bloggers who alternately claim Mr. Obama, 47, is dyeing his hair gray (to appear more distinguished) or dyeing it black (to appear younger). “I can tell you that his hair is 100 percent natural,” Zariff said. “He wouldn’t get it colored.”

...