内容摘要：Healthy eating, regular exercise and a healthy body weight reduce the risk of developing it.

Healthy eating, regular exercise and a healthy body weight reduce the risk of developing it.

They are made from the skin of a lechwe antelope by the Batwa men and worn by the women or used by the women to protect their babies from the elements.On the fur outside are "geometric patterns, meticulously, delicately and beautifully designed", Yonga says.

There are pictures of the women wearing the cloaks, and a 300-page notebook written by the person who brought the cloaks to Sweden - ethnographer Eric Van Rosen.He also drew illustrations showing how the cloaks were designed and took photographs of women wearing the cloaks in different ways."He took great pains to show the cloak being designed, all the angles and the tools that were used, and [the] geography and location of the region where it came from."

The Swedish museum had not done any research on the cloaks - and the National Museums Board of Zambia was not even aware they existed.So Yonga and Kapwepwe went to find out more from the community in the Bengweulu region in north-east of the country where the cloaks came from.

"There's no memory of it," says Yonga. "Everybody who held that knowledge of creating that particular textile - that leather cloak - or understood that history was no longer there.

"So it only existed in this frozen time, in this Swedish museum."She believes South Sudanese models are in demand not just for their physical beauty, but for their "resilience" too.

Goi was born in Juba but as a child she moved to neighbouring Uganda, like Akol and hundreds of thousands of other South Sudanese.Many fled in the years after 2011, when South Sudan became independent from Sudan.

There were high hopes for the world's newest nation, but just two years later a civil war erupted, during which 400,000 people were killed andAlthough the civil war ended after five years, further waves of violence, natural disasters and poverty mean people continue to leave.