9781422287729

Words to Understand

categories: Classes or groups that we sort things into. negative: Bad; having to do with the downside of things. inspire: Motivate you to do something positive. psychologists: Experts who study the mind and emotions.

evolving: Slowly developing over many generations. dilated: Got bigger or expanded. chronic: Lasting for a long time. nutrition: The parts of what you eat and drink that your body uses to function correctly. ulcers: Sores on the inside of your stomach. immune systems: The parts of your body that work together to fight off diseases. anxiety: A long-lasting feeling of worry or fear. depression: A feeling of sadness or hopeless, which can last for a long time. destructive: Hurting something or someone.