Oxidation-reduction reactions (ORRs) continuously occur in the human body, involving the transfer of electrons between molecules of various substances. All vital activities of any organism depend on these processes. Redox reactions themselves not only do not cause any harm, but are also necessary for any person. However, in some cases, ORRs have a side effect - the formation of free radical compounds. If, as a result of a reaction, a substance is left with one or more unpaired electrons in its outer electron shell, it becomes overly active and unstable. To neutralize themselves, free radicals must react with another molecule and oxidize it. Often, this process leads to the death of a healthy body cell, the molecule of which is destroyed by a free radical during the oxidation process. Proteins, fats, nucleic acids, and other essential elements can be damaged.
If a person eats poorly, has problems sleeping, is under stress for a long time, often smokes, or drinks alcohol, then the likelihood of the formation of free radicals increases several times. Collectively, their effects lead to decreased immunity, accelerated aging, and an increased risk of cancer and cardiovascular diseases.