DNA damage from oxidative stress can cause mutations and disease.
Harm to DNA structure and bases caused by free radical attack, potentially leading to mutations, cellular dysfunction, and cancer development. Chronic DNA damage accelerates aging.
Free radicals and ROS can directly attack DNA bases and the phosphodiester backbone, creating breaks and modifications that accumulate over time. Common DNA lesions include 8-oxoguanine and thymine glycol, which can cause mispairing during replication and lead to mutations. While cells possess DNA repair mechanisms including base excision repair and mismatch repair, chronic oxidative stress overwhelms these systems, particularly with aging. This explains why oxidative stress is linked to cancer, neurodegeneration, and accelerated aging.
Initiates mutagenic events and cellular transformation when DNA repair systems are overwhelmed.
Consume foods rich in antioxidants and DNA-protective compounds like cruciferous vegetables and berries. Minimize exposure to DNA-damaging factors including smoking and excessive radiation. Support DNA repair through adequate sleep and stress reduction.
Protecting DNA from oxidative damage is crucial for preventing mutations and disease.
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