This article may contain graphic and/or adult content unsuitable for minors and sensitive readers.
South Africa is one of the 10 unhappiest countries in the world -- even unhappier than Zimbabwe, according to the Happy Planet Index of the New Economics Foundation.
Researchers say they measure "what matters" to people, such as their life expectancy, their experience of welfare, the state of their environment and the sustainable use of their resources.
Altogether 151 countries were polled, and South Africa was ranked as number 142 on the list.
Botswana was rated as the unhappiest country, and Costa Rica as the happiest.
