What damages your cells?
Harmful molecules are continually bombarding your body. The worst offenders are glucose (a type of sugar), and free radicals, by-products of energy production. Both can damage the proteins, fats and DNA that make up your cells. When you are young, your body is able to repair most of this damage. But as you get older, the repair process is less efficient. Some researchers think that boosting our natural defences against these chemical onslaughts may lessen the effects of ageing.