Happiness ranking: Bottom 10 countries globally

Afghanistan has been ranked as the world's unhappiest country.

Other countries include Sierra Leone, Lebanon, Malawi and Zimbabwe.

The World Happiness Report says happiness rises with household size up to four people, but above that happiness declines.

Notably, people living alone are much less happy than people who live with others.

The report says trends towards increased loneliness are most evident among young people.

According to the report, in 2023, 19 per cent of young adults across the world reported having no one they could count on for social support, a 39 per cent increase compared to 2006.

The report says that public policies should consider how economic decisions may have secondary effects on relationships, hence affecting the wellbeing of families.