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Addiction and neural ageing

free radicals

Atoms or group of atoms that contain unpaired electrons and are therefore unstable and highly reactive. They are produced both via metabolism and by exposure to harmful substances. Free radicals acquire electrons from other molecules around them, thus creating another unpaired electron in that molecule, and so on, resulting in a chain reaction. This chain reaction can cause considerable damage to living material. Free radicals can be inactivated by antioxidants.

» Glossary


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