日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

WASHINGTON - Jet-lagged mice die younger, researchers said on Monday in a study that suggests that working unusual shifts and flying back and forth across time zones takes a permanent toll on health.

Tests on more than 100 mice showed that old mice forced to live on a confusing schedules of light and darkness, simulating rotating shifts or international travel, died sooner than those on gentler schedules.