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Free radicals are highly reactive molecules that can lead to oxidative stress within the body. They are produced naturally during metabolic processes, particularly during the production of energy within cells. Due to their unpaired electrons, free radicals seek to stabilize themselves by reacting with other molecules, which can result in the damage of cellular components such as DNA, proteins, and lipids. This process is implicated in a variety of health issues, including aging and chronic diseases, highlighting the significant role that free radicals play in cellular damage.
In contrast, proteins, enzymes, and carbohydrates serve functional roles in the body and are generally not known to cause damage to cells. Proteins function as building blocks of tissues, enzymes catalyze biochemical reactions, and carbohydrates provide energy. While these molecules may become harmful under certain circumstances (e.g., misfolded proteins, excessive carbohydrate intake), they do not inherently possess the oxidative damage potential associated with free radicals.