One in four of all adults in the United States suffers from mental illness, which means that if you haven't experienced it personally or someone in your family hasn't, it's still very likely that someone you know has, though they may not talk about it.
Uno de cada cuatro de todos los adultos en EE. UU. sufre una enfermedad mental, lo que significa que si no lo has experimentado o nadie en tu familia, es muy probable que alguien que conozcas lo sufra, aunque no se hable de ello.