Malnutrition

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Basics

• Summary
• Start Here
• Diagnosis and Tests

Learn More

• Related Issues

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Research

• Clinical Trials
• Journal Articles

Resources

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For You

• Children
• Older Adults
• Patient Handouts

Summary

Food provides the energy and nutrients you need to be healthy. If you don't get enough nutrients -- including proteins, carbohydrates, fats, vitamins, and minerals - you may suffer from malnutrition.

Causes of malnutrition include:

• Lack of specific nutrients in your diet. Even the lack of one vitamin can lead to malnutrition.
• An unbalanced diet
• Certain medical problems, such as malabsorption syndromes and cancers

Symptoms may include fatigue, dizziness, and weight loss. Or, you may have no symptoms. To diagnose the cause of the problem, your doctor may do blood tests and a nutritional assessment. Treatment may include replacing the missing nutrients and treating the underlying cause.

Start Here

• Undernutrition (Merck & Co., Inc.) Also in Spanish

Diagnosis and Tests

• Albumin Blood Test (National Library of Medicine) Also in Spanish
• Malnutrition Tests (American Association for Clinical Chemistry)
• Prealbumin Blood Test (National Library of Medicine) Also in Spanish

Related Issues

• Iodine Deficiency (American Thyroid Association) Also in Spanish
• Nutrition in Cancer Care (PDQ)-Patient Version (National Cancer Institute) Also in Spanish
• Pernicious Anemia (National Heart, Lung, and Blood Institute)
• Vitamin Deficiency Anemia (Mayo Foundation for Medical Education and Research) Also in Spanish

Clinical Trials

• ClinicalTrials.gov: Malnutrition (National Institutes of Health)

Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)

• Article: Association of Vitamin D Status and Other Clinical Characteristics With COVID-19...
• Article: Vitamin D deficiency in patients with diabetes and COVID- 19 infection.
• Article: Causes of mortality in northern elephant seal pups on San Miguel...
• Malnutrition -- see more articles

Find an Expert

• Centers for Disease Control and Prevention Also in Spanish

Children

• Failure to Thrive (For Parents) (Nemours Foundation) Also in Spanish

Older Adults

• Preventing Malnutrition in Older Adults (American Academy of Family Physicians) Also in Spanish
• Senior Health: How to Prevent and Detect Malnutrition (Mayo Foundation for Medical Education and Research) Also in Spanish

Patient Handouts

• Beriberi (Medical Encyclopedia) Also in Spanish
• Kwashiorkor (Medical Encyclopedia) Also in Spanish
• Malnutrition (Medical Encyclopedia) Also in Spanish
• Pellagra (Medical Encyclopedia) Also in Spanish
• Pica (Medical Encyclopedia) Also in Spanish
• Scurvy (Medical Encyclopedia) Also in Spanish