Severe sleep apnea raises the risk of dying early by 46 percent, U.S. researchers reported Monday, but said people with milder sleep-breathing problems do not share that risk.

• 美国研究人员周一在报告中称，严重的睡眠呼吸暂停使人过早死亡的风险提高了46%25，而症状较轻的的人则不会有这个危险。