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Health A to Z

Antioxidants

Why fending off free radicals should be on your to-do list.
Benefits of antioxidants heart disease prevention

Antioxidants are compounds found in plant-based foods that may protect your cells against the effects of free radicals — molecules that can damage cells — and may play a role in preventing heart disease, cancer and other diseases.

Health benefits Antioxidant substances include beta-carotene, lutein, lycopene, selenium and vitamins A, C and E. These compounds found in many foods, including fruits and vegetables, nuts, grains, and some meats, poultry and fish. Eating a variety of fruits and vegetables is recommended to gain maximum benefits from antioxidants. Canada’s Food Guide offers guidelines for eating a diet that is rich in antioxidants.

Food or supplements? Research shows eating foods that contain antioxidants is more effective than taking supplements. Before taking antioxidant vitamin supplements, consult with a doctor.

More info from Chatelaine
The truth about antioxidants

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Outside resources
Up the Antioxidants by Dietitians of Canada

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The cover of the Chatelaine Summer 2025 issue, featuring a pink drink with a paper straw.

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In our Summer 2025 issue, we get real about what sex is like after 40. Plus, living together after divorce, our favourite beauty products of the year and 17 incredibly summery recipes, from ceviche to sour cherry cobbler.