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(Africa) Fast food is fueling an obesity epidemic on Continent

Eat Your Vegetables!

In the public mind, sub-Saharan Africa is a region plagued by war, famine and disease. Now it faces a new threat – obesity. It is not a problem widely associated with a continent where millions live on less than a dollar a day. But growing rates of obesity are posing a significant risk to the health of the next generation.

With a population that has passed one billion, Africa is starting to experience the ills of the developed world, driven by changing diets, urbanisation and increasingly sedentary lives, according to research published in The Lancet.

The reasons for the steep rise in obesity among some of the world’s poorest nations is hotly debated. One theory is that the global increase is a legacy of evolution. People from Africa, Asia and Polynesia are particularly prone to obesity because they are more likely to have inherited the genes that encourage fat storage.

This is the “thrifty gene hypothesis” – the notion that obesity occurs especially among populations exposed in the past to alternating feast and famine. Months of food shortages and near starvation would be followed by weeks of feasting when the rains came. Genes that laid down fat as a reserve against the next shortage were favoured – but among today’s urban populations, where shortage never comes, the genes overdo their job.

The real culprit, researchers believe, is the shift to urban living. Cities in Africa are the fastest-growing in the world. This is not only about the spread of McDonald‘s, KFC and the “Coca-Colanisation” of the developing world. It is also about the change in diet that occurs when people move from growing to buying their food.

Jenny Cresswell, chief author of the Lancet study, said: “Once people move to the city, their activity levels go down. They are no longer able to grow their own food. Instead they tend to rely on street hawkers and eat foods high in fat and sugar.

“Today, obesity in Africa is associated with wealth: the wealthier you are, the more likely you are to be overweight. But as populations get richer, it is expected that the picture will swing round and obesity will become associated with the poor.”

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