Lack of sleep may have more than serious effects than losing focus in school or at work. A recent study conducted by researchers in the University of Chicago traces build up of calcium in the heart of a person that gets less sleep than the average.
A group of 495 men and women between 35 to 47 years old were subjects of the survey. The proponents were surprise with the results as an hour less sleep than average increases cardiac calcium by as much as 16%.
The individuals getting less than the recommended 5 to 7 hours have a 27% occurrence of plaques in their blood vessel. Those sleeping within the average range of hours had 11% affection. Only 6% of the subjects who gets over 7 hours of sleep were found positive for coronary plaques.
Even the researchers were surprised with the strong relation between the lack of sleep and cardiac problems. Earlier studies were not able to establish the link between shut eyes and heart problems. Most of the previous studies had biases to deal with and questionable methodologies.