Excess vitamins can become toxic.
Give an example of an essential vitamin, its function in human metabolism, and the symptoms of its deficiency. Give an example of an essential mineral, its function in human metabolism, and the symptoms of its deficiency. Take a look at the Nutrition Facts label on some item in your pantry. Read the section on p. 448 about ways that your diet can affect your health. Describe what happens to a muffin, from the time you put a bite into your mouth until the time the undigested wastes exit your body.