The Yolk: A Nutrient Goldmine
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What You Lose Without the Yolk
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Eggs are packed with nutrients. One large egg has varying amounts of 13 essential vitamins and minerals - all for 70 calories. While egg whites contain some of the eggs’ high quality protein, riboflavin and selenium, when you skip the yolk, you lose at least a portion of the following nutrients found in part in the yolk and, in some cases, entirely in the yolk alone:
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Protein
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Vital for the health and maintenance of body tissues, such as muscle
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Other sources: Meat, fish, poultry, dairy, beans, nuts and seeds
Note: Eggs provide the highest-quality protein available. Other sources of complete protein, which contains all essential amino acids, are animal proteins and soy.
Vitamin D
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Works with calcium to promote bone health, regulates cell growth and immune function
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Other sources: Salmon, tuna, fortified foods such as milk and orange juice when fortified
Choline
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Essential for normal functioning of all cells, important for brain development of a fetus during pregnancy
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Other sources: Beef or chicken liver, cod and cauliflower
Vitamin B12
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Involved in nerve function, energy metabolism and synthesis of DNA and red blood cells
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Other sources: Fish, meat, poultry, milk and fortified breakfast cereals
Folate
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Prevents birth defects and damage to DNA, needed for cell division and growth
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Other sources: Fortified grain products, beans and spinach
Vitamin A
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Supports immune function, eye health and cell growth
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Other sources: Meat, milk, sweet potatoes, spinach, carrots and cantaloupe
Vitamin B6
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Critical for protein metabolism and synthesis of neurotransmitters, important for immune function
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Other sources: Meat, poultry, beans and fortified breakfast cereals
Iron
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Needed to transport oxygen throughout the body, involved in regulation of cell growth and immunity
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Other sources: Beef, tuna, fortified cereals, and beans
Thiamin
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Required for nutrient metabolism and normal function of the heart, muscles and nervous system
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Other sources: Enriched bread and flour, meats, beans and nuts
Vitamin E
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Antioxidant that helps prevent cell damage
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Other sources: Oils, nuts and seeds
Selenium
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Regulates thyroid function, antioxidant that helps prevent cell damage
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Other sources: Brazil nuts, fish, poultry and beef
Phosphorous
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Essential for development of healthy DNA, important in bone structure
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Other sources: Milk and other dairy products, meat, fish, poultry and nuts
Zinc
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Supports normal growth and development during pregnancy and childhood, required for taste and smell, important for proper immune function and wound healing
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Other sources: Oysters, meat, poultry, seafood and beans