It is one of the eating disorders (like nervous bulimia and
the periodic eating compulsion) that can be found in obese
patients. Like the other eating disorders, it can be
responsible for the difficulty some patients have to adhere
to the treatment and reach ideal weight. Patients with this
syndrome present a characteristic eating behavior and, many
It happens as an eating disorder with three main components:
- Morning anorexia (total lack of appetite in the morning);
- Evening or nocturnal hyperfagi, when wide awake (great
ingestion of food during the night);
The frequency of NED varies between 1.5% in the general
population, going through 9.0% in obesity treatment clinics,
and reached 26.0% in patients with morbid obesity.
Patients with NED usually eat more than 55% of the total
daily calories between 8 PM and 6 AM, wake up several times
during the night, more than half the times only to eat, and
present an important aggravation in humor at night.
Therefore, NED is a unique combination of an eating, sleep,
and humor disorder.
Even though there is no specific treatment, many approaches
are made, inclusive, to consider the obese people not as
people with lack of will power, but as holders of an innate
biological vulnerability, and to recognize the eating
disorder will enable the evaluation and the treatment
planning more rationally and individually.