A survey across 142 countries found that about almost a quarter of people felt very or fairly lonely, but the loneliest group was not the old, as many assume: it was young adults aged 19 to 29 - Space Daily
Almost a quarter of the world reported feeling very or fairly lonely. The Meta-Gallup Global State of Social Connections survey (pulished in 2023) put the figure at 24% across 142 countries and areas.