Traditionally we associate malnutrition with weight. If we see a very thin person who doesn't eat much, we worry. But did you know that even people who are not underweight and who have diets that appear healthy can have underlying nutritional deficiencies? These deficiencies may express themselves in unexpected ways, including maladaptive behaviors. So, if someone's behavior is troubling, consider what their body might be missing.

Explore the Micronutrient Information Center at the Linus Pauling Institute (Oregon State University)