Fat-Soluble Vitamins Flashcards
All fat-soluble vitamins have the possibility for _______ due to their ability to be stored in the body for long periods of time
Toxicity
Vitamin A (Retinol, beta-carotene)
contributes to vision health, tissue strength and growth, and embryonic development
Deficiency of Vitamin A
Vision changes
Xerophthalmia (dryness and hardness of cornea)
GI disturbances
Hyperkeratosis
Dietary sources of Vitamin A
Fatty Fish
Egg yolks
Butter, cream
Dark yellow/orange fruits and vegetables (carrots, yams, apricots, squash, cantaloupe)
Vitamin D
Maintain serum calcium and phosphorus (absorption), aid in bone development
Sunlight enables the body to synthesize vitamin D in the skin
Deficiency of Vitamin D
Bone demineralization
Fragile bones
Osteomalacia in adults
Extreme deficiency:
-Rickets
Dietary sources of vitamin d
fortified milk
fatty fish
egg yolks
Vitamin E
Protects vitamin A from oxidation
Is an antioxidant that helps to preserve lung and red blood cell membranes
Deficiency of Vitamin E
Rare but results in:
Anemia and can cause edema and skin lesions in infants
Dietary sources of Vitamin E
Vegetable oils
Grains
Nuts
Dark green vegetables
Vitamin K
Essential for prothrombin synthesis (blood clotting)
aids in bone metabolism
Deficiency of Vitamin K
Increased bleeding times
*used as an antidote for excess anticoagulants (warfarin)
Dietary sources of Vitamin K
Carrots
Eggs
Dark Green Vegetables (spinach, broccoli, asparagus)