Turmeric is believed to have been used to preserve food before the widespread use of refrigeration. Indian healers used Turmeric to treat obesity. We now know that turmeric has a beneficial effect on the liver, stimulating the flow of bile and the breakdown of dietary fats. Studies also confirm that this herb is useful for preventing blood clots. A potent anti-inflammatory, herbalists recommend turmeric for the pain and swelling of arthritis. Tropical perennial plant, the lush green leaves need high humidity and prefer partial shade. Tender zones 8-11.