There has been a debate about whether having more supermarkets in poor areas of South Africa would improve access to food, write geography researchers William G. Moseley, Stephen Peyton and Jane Battersby in this commentary. Research confirms that there are many more supermarkets in wealthier areas, but adding more of these stores to poor neighborhoods would not solve food security problems, they suggest. The poorest "households often have irregular cash flows, meaning that they must purchase food in small quantities or buy items on credit when there is no money to be had," they write.

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