Orange-fleshed sweetpotato to feed hidden hunger

There is more to good nutrition than calories and protein. The realisation that you can be perfectly well fed, maybe even too well fed, and yet still malnourished, is relatively recent. It often goes by the name hidden hunger, and reflects a lack of essential micronutrients in the diet. Tackling the lack of micronutrients is tricky because people do not really feel their hidden hunger. “No-one wakes up saying ‘I crave vitamin A today’,” as a recent paper put it.

That paper looks back over the 25-year history of the most successful effort to feed hidden hunger to date: the introduction of orange-fleshed sweet potatoes to subSaharan Africa. The beta-carotene that makes sweet potatoes orange is the precursor of vitamin A, one of the most important micronutrients. In this episode, I’m talking to Dr Jan Low, who has worked on orange-fleshed sweet potato from the start.

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