'The warmer it is, the more gender-based violence is likely to occur'

Several studies have looked at increasing temperatures due to climate change and what this means for society.

One aspect of the research that has been done is the potential contribution of the physical environment - such as heat - to issues of violence.

Wits Reproductive Health and HIV Institute Prof Matthew Chersich explains the relationship between heat and violence.

Essentially when the temperature rises, people get more irritable and aggressive and also their thoughts tend to become more negative.

Matthew Chersich, Professor - Wits Reproductive Health and HIV Institute

And also the warmer it is people generally go outdoors, they might also drink more..

Matthew Chersich, Professor - Wits Reproductive Health and HIV Institute

We have got a society that has got quite a lot of stress and anxiety levels so you have a little bit of heat - increased murders, increased assaults.

Matthew Chersich, Professor - Wits Reproductive Health and HIV Institute

There is one study coming up in South Africa that shows very clearly, the warmer it is on a day, the more homicides we get.

Matthew Chersich, Professor - Wits Reproductive Health and HIV Institute

Chersich says men are more susceptible to heat and are likely to be aggressive.

There are some studies that show the warmer it is, the more gender-based violence is likely to occur.

Matthew Chersich, Professor - Wits Reproductive Health and HIV Institute

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