Happy people don’t just have more enjoyment and feel happier more often. They’re also likely to live longer, too. A new study has established this. Of course, it’s possible that people who died sooner weren’t as happy because they were ill or because of other factors that affect both mortality and mood. The researchers adjusted for age, sex, wealth and education, signs of depression, health and health behaviors such as smoking and physical activity. Even with those adjustments, the risk of dying in the next five years was still a lot lower for the happiest people.