ELI5: malnutrition
// explanation
What is malnutrition?
Malnutrition means your body isn't getting the right food to work properly [1][4]. It's like your body is a car that needs the right fuel and oil—without them, it doesn't run well [1][2].
Why does it happen?
Sometimes people don't have enough food to eat, or they eat too much of the wrong kinds of food [1][3]. Your body needs a mix of things like proteins, vitamins, and minerals to stay healthy [4].
What does it feel like?
People with malnutrition might feel tired, weak, and get sick more easily [3]. It's like your body's batteries are running low and can't protect you [2].
How do you fix it?
Eating healthy foods with the right nutrients helps your body feel better [1][3]. Doctors can help figure out what foods your body needs [2].
// sources
Mar 1, 2024 ... Malnutrition refers to deficiencies, excesses, or imbalances in a person's intake of energy and/or nutrients.
May 4, 2022 ... Malnutrition is an imbalance between the nutrients your body needs to function and the nutrients it gets. It can mean undernutrition or overnutrition.
Malnutrition is a serious condition that happens when your diet does not contain the right amount of nutrients. It means poor nutrition.
Aug 29, 2025 ... What is malnutrition? Malnutrition means that your body isn't getting enough calories or the right balance of nutrients to stay healthy.
20% of nursing home residents had some form of malnutrition. However, malnutrition definitions were variable and prevalence ranged from 1.5 to 66.5%.
Video by Stanford Center for Health Education
Video by UNICEF
Video by Doctors Without Borders / MSF-USA
