Those suffering with sleep disorders have been told that their condition not only makes them tired, but can also make them hungry.
Scientists working at Uppsala University in Sweden found that after just one sleep-deprived night, the neurological area associated with appetite became more responsive when a person was shown images of food.
The team concluded that sleeping disorders can have a significant impact on the chances of a person becoming obese.
"It may therefore be important to sleep about eight hours every night to maintain a stable and healthy body weight," said researcher Christian Benedict of the Department of Neuroscience at the educational establishment.
He explained that the findings could be even more significant, as sleep deprivation was a growing problem in modern-day society.
According to Mind, many people worry about not getting enough sleep each night, but that often that makes it worse. Individuals with sleep disorders should try to relax and adopt a regular routine, states the charity.