A study published in "Nature Communications" claims that people who lack enough sleep tend to eat more and gain weight.
Patients in the study who went a night without sleeping showed that the areas of their brains associated with the feelings of craving were stimulated.
This study was conducted at the University of California at Berkeley, with 23 participants. The patients underwent two MRIs. One MRI was done after the patients had a full night of sleep, and one MRI was done after the patients stayed awake for the entire night. During each MRI, the patient was shown pictures with 80 different types of food, and measured their brain's responses to the pictures. The researchers discovered the change in brain activity between the two MRIs.
Co-author of the study, Matthew Walker, said "There was another interesting discovery. High-calorie foods were more attractive to sleep-deprived patients." He went on to add that this could "explain the connection between sleep deprivation, weight gain, and obesity."
Therefore, if you want to control your weight, you may want to make sure you get enough sleep.