from The American Heritage® Dictionary of the English Language, 4th Edition
- Siqueiros, David Alfaro 1896?-1974. Mexican mural painter whose works depict political protest and revolution. His best-known painting is the mural The March of Humanity (1968) in Mexico City.
Sorry, no etymologies found.
Given the evidence he has, what he's suggesting is almost certainly true: lonely people do suffer illnesses that don't affect non-lonely people as much.
Lonely children are often less physically active and less fit, and more likely to experience tension and anxiety than their non-lonely counterparts.
A comparison of health behaviors in lonely and non-lonely populations.
It came into English directly from Latin but didn't reach the form that refers to the lonely or non-lonely person until it had crossed the big pond and was applied in academic circumstances as we recognize it now.
Lonely people use social networks as a substitute; non-lonely people use them to synergize the relationships they already have.
"When you feel lonely, you have more negative interactions than non-lonely people," says Cacioppo, who directs the University of Chicago's Center for Cognitive and Social Neuroscience.