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Nutrition 101 - Glossary - Z

ZeaxanthinDefinition - Zeaxanthin is a nutrient found in green leafy vegetables and eggs, often with lutein, both of which have been shown to benefit eye health. Relevance - Lutein and zeaxanthin are the only two naturally-occurring carotenoids that are highly concentrated in the eyes. In the retina, they can reduce the risk of cataracts and age-related macular degenerative by filtering harmful blue light and acting as antioxidants.

ZincDefinition - Zinc is an essential mineral found in foods such as oysters, beef, crabs, and fortified cereals that is important in cellular metabolism and immune function. Relevance - In the body, there is no storage system for zinc so it must be obtained daily, as it is important in wound healing, immunity, growth and development during pregnancy and childhood; Zinc is often present in over-the-counter cold medications for its purported immune benefits.