Answer:
Extreme dietary restriction that leads to significantly low body weight.
Step-by-step explanation:
Anorexia Nervous can be said to be an eating disorder that makes people to obsess about their weight and what they eat.
It is usually characterised by a distorted body image, with an unwarranted fear of being overweight.
It's Symptoms includes trying to maintain a below normal weight through starvation or too much exercise.
It's Types major type is the Restriction type which is caused by maintaining very low calorie count , by eating only one meal a day.
Anorexia Nervosa is usually chronic and can last throughout life.