Antioxidants can help prevent our bodies from getting certain illnesses like diabetes, cancer, and heart disease.
Our bodies frequently produce free radicals, which are atoms with a lone electron (they usually like to be in pairs). This extra electron is very reactive so it will react with about anything and produce cell damage.
Antioxidants attach to free radicals and keep them from damaging cells. Antioxidants are a kind of phytochemical.