Because of its high antioxidant content, oil extracted from the leaves of cilantro has been shown to inhibit unwanted oxidation processes when added to other foods, delaying or preventing spoilage. Cilantro is one of the very few herbs that is used as a heavy metal detox agent, to detoxify mercury, aluminum and lead among others. Because of its chelation abilities, cilantro is also being studied as a natural water purifier. The presence of anti-oxidants, rich phyto-nutrients, minerals and vitamins in cilantro all work synergistically to boost the body’s overall immune system against infection and help to lower the risk of oxidative stress in the cells that are carcinogenic (cancer-causing). Cilantro also contains volatile oils that have antimicrobial properties, making it a very useful herb that can be used for fungal, bacterial or yeast infections.