Dr. Benjamin Sommers, who studies health policy for vulnerable populations at the Harvard T.H. Chan School of Public Health, says the problem goes beyond clinical trials and affects diagnosing as well. He recently had trouble arranging for neuropsychological testing to diagnose a Spanish-speaking patient who did not speak English fluently.
The language barrier is a "real issue for mental health disparities," says Sommers, who is also a primary care physician at Brigham & Women's Hospital in Boston.
Read more on NPR.