What Are Antioxidants? - Definition, Foods & Benefits

Lesson Transcript
Instructor: Donna Ricketts

Donna Ricketts is a health educator with 15 years of professional experience designing health and wellness programs for adults and children.

Antioxidants are defined as vitamins and elements that remove potentially damaging agents from the body. Discover what foods antioxidants are found in and identify the benefits of antioxidants for the body. Updated: 10/21/2021

Antioxidant Definition

Your body is in a constant battle against infection, diseases, and the formation of free radicals. However, there's a secret weapon that can help you fight against these things: antioxidants! Antioxidants are elements such as vitamins A, C, and E that counteract the damage caused by free radicals and help protect your healthy cells. Free radicals are the molecules that contain unpaired electrons, which make them highly reactive. In this form, they can cause damage by attacking healthy cells, and when these cells grow weakened, you become more vulnerable to disease.

Free radicals may be produced from normal body functions such as breathing or physical activity, but they are mainly formed from your exposure to environmental hazards, such as pesticides, air pollution, and cigarette smoke. Antioxidants work to disable the disease-causing free radicals, thus preventing the damage from occurring. Although your body naturally produces antioxidants, it doesn't produce enough to protect you from free radicals, so that is why it is important to include antioxidant-rich foods in your diet on a regular basis.

Antioxidant - Rich Foods

Fruits, vegetables, whole grains, legumes, and nuts all contain an intricate mix of antioxidants, so eating a variety of these healthy foods will help ensure that you are getting plenty of these disease-fighting nutrients.

Here are some ways you can include antioxidant-rich foods into your diet:

  • Consume at least one fruit or vegetable with every meal.
  • Choose fruits and vegetables rich in colors like blue, purple, red, orange, yellow, and green, because they often pack the most nutrients and antioxidants.
  • Smoothies are a great way to reap the health benefits of antioxidants. Try blending darkly colored berries such as blueberries or blackberries with citrus fruits, pineapples, apples, or pears.
  • Antioxidants are also found in grain products. Oats, in particular, are an excellent source for incorporating antioxidants into your daily diet. Oatmeal and oat bran are two good food choices.
  • Eat your legumes. Red beans, kidney beans, black beans, and pinto beans are all rich sources of antioxidants.
  • Cooking with herbs and spices like dried oregano, turmeric, cinnamon, cloves, and ginger supply excellent doses of antioxidants.

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  • 0:04 Antioxidant Defintion
  • 1:13 Antioxidant-Rich Foods
  • 2:29 Antioxidant Benefits
  • 3:09 Lesson Summary
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