Eva Lindberg and Malin Svensson of Uppsala University Hospital found that women who snore are not rested when they wake up, The Local reported.

"Snoring has been considered a medical problem only if it is associated with repeated interruptions to breathing. Our results show that snoring in itself can give negative health effects," Lindberg told Upsala Nya Tidning.

The researchers tracked 400 women ages 20 to 70. They found that one-seventh of the women who snored reported being so exhausted they fell asleep unintentionally during the day.