The state of being excessively thin and wasting of the body.


As directed by a healthcare professional, a balanced, nutrient-dense meal plan can help people reach a healthy weight.

When to seek immediate medical care

Seek medical care immediately for:

  • Suicidal thoughts or behavior.
  • Symptoms of refeeding syndrome such as muscle weakness, difficulty breathing, irritability or confusion.

When to make a doctor's appointment

Make an appointment to see a healthcare professional if there is:

  • Distorted perception of weight or shape.
  • No appetite and limited food and beverage intake.
  • Use of laxatives or diet aids, or vomiting after eating.
  • Excessive exercising to lose weight.
  • Depression and anxiety.
  • Substance or alcohol use.