According to a recent article by Lindsey Tanner, bad habits can age you by 12 years. Four common “bad” habits were identified: smoking, drinking too much, inactivity, and poor diet. Researchers followed 5000 Britishers for 20 years. “These habits, combined, substantially increased the risk of death and made people who engaged in them seem 12 years older than people in the healthiest group,” said lead researcher Elisabeth Kvaavik of the University of Oslo. Interestingly enough, most people have partial (if not complete) control over these four habits. This is just another indication that your lifestyle can make a big difference in the quality, and perhaps even the quantity, of your life.