 New plants and practices were acquired by the Pnong in these new locations, but upon returning in the 1980s and 1990s, knowledge and use of plants native to their homelands had been forgotten by many.Adequate conventional biomedicine and healthcare can be difficult or impossible to obtain by the locals in the countryside of Cambodia - in particular during the rainy season - and it is therefore official policy of the Cambodian government (backed by the WHO) to support the practice of traditional medicines.Research shows that, as of 2011, 95% of the inhabitants in two Pnong villages still regularly use medicinal plants.