Do you sometimes feel like marriage problems are inevitable? They might be -- recent studies show that marriage problems have been linked to a specific gene variation in males. The gene variation, involved in brain signaling, affected the ability to mate for life in rodents and experts believe that it may produce similar results in humans, based on findings that showed that men with the gene were more likely to be unhappy in their relationships.

Still, don't let these findings get you down. Marriage is hard but a little compassion, understanding and quality time goes a long way. Our Life Fit expert Laura Lewis has some valuable tips on how to make love last -- check them out!