Knowledge of medicinal plants at risk as languages die out

Loss of linguistic diversity may lead to disappearance of age-old remedies unknown to science, study warns

The areas with languages most at risk were in north-west Amazonia, where 100% of this unique knowledge was supported by threatened languages, and in North America, where the figure was 86%. In New Guinea 31% of languages were at risk. The anticipated loss of linguistic diversity would “substantially compromise humanity’s capacity for medicinal discovery”, according to the paper, published in PNAS.