Turmeric is a spice that comes from the turmeric plant. Its major active ingredient is curcumin. "Curcumin gives turmeric that yellowish color," Hopsecger says. "But beware: It stains easily. Try not to get it on your clothing!"

Turmeric's treasure lies in curcumin's benefits. Curcumin has antioxidants and anti-inflammatory properties. Researchers are investigating whether it may help diseases in which inflammation plays a role - from arthritis to ulcerative colitis.