What is the definition of Malnutrition?

Malnutrition is the condition that occurs when your body does not get enough nutrients.

What are the alternative names for Malnutrition?

Nutrition - inadequate

What are the causes for Malnutrition?

There are many types of malnutrition, and they have different causes. Some causes include:

  • Poor diet
  • Starvation due to food not being available
  • Eating disorders
  • Problems with digesting food or absorbing nutrients from food
  • Certain medical conditions that make a person unable to eat

You may develop malnutrition if you lack a single vitamin in your diet. Lacking a vitamin or other nutrient is called a deficiency.

Sometimes malnutrition is very mild and causes no symptoms. Other times it can be so severe that the damage it does to the body is permanent, even though you survive.

Poverty, natural disasters, political problems, and war can all contribute to malnutrition and starvation, and not just in developing countries.

Some health conditions that are related to malnutrition are:

  • Malabsorption
  • Hunger
  • Beriberi
  • Binge eating
  • Deficiency - Vitamin A
  • Deficiency - Vitamin B1 (thiamine)
  • Deficiency - Vitamin B2 (riboflavin)
  • Deficiency - Vitamin B6 (pyridoxine)
  • Deficiency - Vitamin B9 (folacin)
  • Deficiency - Vitamin E
  • Deficiency - Vitamin K
  • Eating disorders  
  • Kwashiorkor
  • Megaloblastic anemia
  • Pellagra
  • Rickets
  • Scurvy
  • Spina bifida

Malnutrition is a significant problem all over the world, especially among children. It is very harmful to children because it affects brain development and other growth. Children who suffer from malnutrition may have lifelong problems.

What are the symptoms for Malnutrition?

Symptoms of malnutrition vary and depend on its cause. General symptoms include fatigue, dizziness, and weight loss.

What are the current treatments for Malnutrition?

Treatment most often consists of:

  • Replacing missing nutrients
  • Treating symptoms as needed
  • Treating any underlying medical condition

What is the outlook (prognosis) for Malnutrition?

The outlook depends on the cause of the malnutrition. Most nutritional deficiencies can be corrected. However, if malnutrition is caused by a medical condition, that illness has to be treated in order to reverse the nutritional deficiency.

What are the possible complications for Malnutrition?

If untreated, malnutrition can lead to mental or physical disability, illness, and possibly death.

When should I contact a medical professional for Malnutrition?

Talk to your provider about the risk of malnutrition. Treatment is necessary if you or your child have any changes in the body's ability to function. Contact your provider if these symptoms develop:

  • Fainting
  • Lack of menstruation
  • Lack of growth in children
  • Rapid hair loss

How do I prevent Malnutrition?

Eating a well-balanced diet helps to prevent most forms of malnutrition.



Ashworth A. Nutrition, food security, and health. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. Nelson Textbook of Pediatrics. 21st ed. Philadelphia, PA: Elsevier;2020:chap 57.

Becker PJ, Nieman Carney L, Corkins MR, et al. Consensus statement of the Academy of Nutrition and Dietetics/American Society for Parenteral and Enteral Nutrition: indicators recommended for the identification and documentation of pediatric malnutrition (undernutrition). J Acad Nutr Diet. 2014;114(12):1988-2000. PMID: 2548748 www.ncbi.nlm.nih.gov/pubmed/25458748.

Manary MJ, Trehan I. Protein-energy malnutrition. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 215.

  • Condition: Hospitalized Patients with Chronic Heart Failure
  • Journal: Journal of the American College of Cardiology
  • Treatment Used: Individualized Nutritional Support
  • Number of Patients: 645
  • Published —
This study evaluated the effect of nutritional support in patients hospitalized with chronic heart failure.
  • Condition: Dialysis Patients in Japan
  • Journal: Nutrients
  • Treatment Used: Salt Intake
  • Number of Patients: 0
  • Published —
This article discusses nutritional interventions in dialysis patients in Japan.
Clinical Trial
  • Status: Not yet recruiting
  • Phase: N/A
  • Intervention Type: Dietary Supplement
  • Participants: 540
  • Start Date: January 1, 2023
Intervention Study for Validation of Application of a Prediction Model in Maintenance Hemodialysis Patients
Clinical Trial
  • Status: Not yet recruiting
  • Phase: N/A
  • Intervention Type: Other
  • Participants: 100
  • Start Date: January 1, 2022
Maternal Obesity Programs Offspring Hypothalamic Neurogenesis and Appetite: Mechanisms and Prevention of Hyperphagia-mediated Childhood Obesity