New research shows folk medicine from Africa may hold the key to treating wounds that defy modern medicine.

A study found granulated sugar poured directly into bed sores, leg ulcers and even amputations promotes healing when antibiotics and other treatments have failed.

The study is headed by Moses Murandu, a senior lecturer in adult nursing at Wolverhampton University, who grew up in Zimbabwe where his father used sugar to heal wounds and reduce pain when he was a child.