The foods that we eat can help or harm our bodies. Our bodies need nutrients such as salt and carbohydrates to survive. But too much or too little can have consequences. We also feed our bodies things unnecessary things, like caffeine. These may have benefits. But they can also do harm. In Nutrition and Your Body, learn about how different nutrients interact with the body. Discover how the body digests them, the changes they cause in the body, and the good and bad effects they have on us.