About a third of Americans use herbal supplements, but outside the United States, that number goes up. Around 80% of the world's population relies on traditional herbal medicine. It is their primary health care. Herbal medicine is a common practice in places such as Africa, China, and India. Herbs are also commonly used in Central and Eastern Europe. Did you know that the former Soviet Union researched many plants to help their Olympic athletes? Many of those herbs are still used by athletes to this day. A World Health Organization (WHO) survey found traditional medicine accounts for about 40% of all health care delivered in China. Additionally, over 90% of hospitals in China have units for traditional medicine.