The August 11th edition of the British Medical Journal reported: "Having strong social relationships seems to have an effect on survival comparable to that of quitting smoking and larger than controlling traditional risk factors, such as obesity or hypertension. A meta-analysis of social relationships and mortality looked at 308,849 participants aged 63.9, on average, at baseline; 29% died during the follow-up of 7.5 years.  Overall, strong social relationships improved the odds of survival by 50%. Similar results were found for two aspects of relationships, defined by the researchers as structural (integration in social networks) and functional (received or perceived social support), although the link with integration was somewhat stronger.