Sleep disorders could take a greater toll on people's quality of life and health among Black and Hispanic people than in White people. Researchers from Arizona State University used data from the Sleep Heart Health Study covering a total of 5,237 people. Sleep disturbances were common with 46% of people having at least mild sleep apnea, 34% reporting frequent snoring, 30% having insomnia symptoms and 25% reporting excessive daytime sleepiness. The physical health of African Americans with sleep problems was significantly worse than in Caucasians. Both Hispanic and African-Americans with sleep problems had significantly worse mental health than Caucasians.