There is a general perception that people get more lonely as they age. That seems to be true in most countries, but not the United States, where new research suggests middle-age people are more likely to be lonely. Emory University researchers analyzed loneliness and age among more than sixty thousand people in nearly thirty countries. They identified a variety of factors contributing to middle-age loneliness. In the U.S., not working was the top reason. Once the causes of loneliness are identified, researchers suggest community involvement to help. By the way, the study found adults in Denmark had lowest levels of loneliness, while those in Greece tended to have the highest. The results are published int the journal Aging and Mental Health.