As your body creates energy at the cellular level, oxygen is metabolized, changing its structure. In this process, the oxygen molecule loses one electron, turning it into a free radical. Free radicals attack our cells. When they attack blood vessels, it contributes to cardiovascular disease. Free radicals also attack us from the outside.
Antioxidants are the defending army.
They quench free radicals by donating an electron to them. Our bodies create antioxidants naturally, and we get them from the foods we eat and through supplements. By keeping free radicals at bay, antioxidants can influence how quickly we age and make the difference between health and disease, if not between life and death. Vitamin A and its plant form precursor, beta carotene, both attack singlet oxygen, a dangerous free radical that affects our eyes, skin, and lungs. Beta carotene is a proven immune booster, and is especially powerful in the elderly.