Oxidative stress is an imbalance between free radicals and antioxidants in your body.
Oxidative stress can cause damage to organs and tissues and result in various diseases.
Free radicals are oxygen-containing molecules with an uneven number of electrons. This uneven number of electrons allows free radicals to react easily with other molecules.
Free radicals can cause large chain chemical reactions in your body because they react so easily with other molecules. These reactions are called oxidation. They can be beneficial or harmful.
Antioxidants are molecules that can donate an electron to a free radical without making themselves unstable. This causes the free radical to stabilize and become less reactive.