Adaptogens are natural substances that help the body adapt to stress, says a modern theory derived from Russian experiments in the mid-20th century. However, the concept is hundreds, or possibly thousands, of years older. Herbs and plants that are now identified as stress-busting adaptogens have been used for centuries in natural healing practices worldwide. Remedies with the longest heritage, now backed by modern research, include Panax ginseng, roseroot (Rhodiola rosea) and jiaogulan (Gynostemma pentaphyllum). These medicinal herbs help to reduce the negative impact of stress by strengthening and stabilising body functions – including the immune system – so it is easier to ride out high-stress situations and life events without succumbing to illness.