Withania somnifera root extract extends lifespan of Caenorhabditis elegans

In the ancient Indian herbal medicine system several ayurvedic preparations are claimed to have longevity enhancing effects. But, so far, no clear scientific evidence has been provided. One among them, is the roots of the plant, commonly known as Ashwagandha (Withania somnifera Dunal- WSD), which is supposed to have myriad of beneficial effects including long life.Here, we evaluated both the root extract (RE) and its purified ingredients (PI-RE)...