A study from the UK published in October of 2012 on 10,000 people over the age of 50 showed that seniors who enjoy life live longer. Over 9 years they found that 20% died, but only 10% of those who had an "inner smile" and nearly 30% died who did not. Factors that influenced this outcome were psychological wellbeing, social isolation, wealth, living without a partner, and mobility,
We also know that people who are lonely and don't have a positive outlook have a higher level of inflammation and markers of inflammation such as cortisol and CRP. This is reversible!