Chimpanzees ‘self-medicate’ with healing plants

“He wasn’t using the hand to walk, he was limping,” she recalled. While the rest of this animal’s group were sitting around eating, the injured chimp limped away looking for ferns. “He was the only chimp to seek out and eat these ferns.”

The researchers collected and analysed the fern – a plant called Christella parasitica, which turned out to have potent anti-inflammatory properties.

In total, the researchers collected 17 samples from 13 different plant species and sent them to be tested by Dr Fabien Schultz, at the Neubrandenburg University of Applied Sciences in Germany.

That revealed that almost 90% of the extracts inhibited bacterial growth, and a third had natural anti-inflammatory properties, meaning they could reduce pain and promote healing.

All the injured and ill chimps reported in this study fully recovered, Dr Freymann was happy to report. “The one who ate ferns was using his hand again within the next few days,” she explained.

“Of course, we can’t 100% prove that any of these cases were a direct result of eating these resources,” she told BBC News.

“But it highlights the medicinal knowledge that can be gained from observing other species in the wild and underscores the urgent need to preserve these ‘forest pharmacies’ for future generations.”