What is oxidative stress?


Oxidative stress is a disturbance in the balance of stressors and antioxidants in favour of stressors, which causes the formation of free radicals in the body. Free radicals can damage tissues in the body, contributing to the development of various diseases (e.g., cardiovascular diseases, Alzheimer’s disease, dementia, cancers and autoimmune diseases) and the ageing process.


Oxidative stress can be caused by the body’s external factors (e.g., smoking, alcohol, heavy metals, UV radiation, chemicals, drugs (e.g., paracetamol), air pollution and environmental toxins, among other factors) as well as the general health of the body (inflammation, chronic diseases, stress, excessive physical activity, etc.).