The night eating syndrome is a disorder of eating behavior in addition to those already known eating disorders like anorexia, bulimia, Orthorexia and bigorexia.
At present not known very well the true prevalence of this syndrome, but it is estimated that suffers from a 1 to 3% of the population, and affects between 8 to 27% of obese people.
Night Eating Syndrome is characterized by overeating at night, both at dinner and afterward, even to get up during sleeping hours to eat because it appears the need to eat in abundance or hyperphagia.