Fat soluble vitamin absoprtion
absorbed like fats, first into the lymph and then into the blood
Fat soluble vitamin transport and storage
Must travel with protein carriers in watery body fluids; stored in the liver or fatty tissue
Fat soluble vitamin excretion
Not readily excreted; tend to build up in the tissues
Fat soluble vitamin toxicity
toxicities are more likely fro supplements but occur rarely in food
Fat soluble vitamin requirements
needed in periodic doses (perhaps weeks or even months) because the body can draw on its stores
Water soluble vitamin absorption
absorbed directly into the blood
Water soluble vitamin transport and storage
travel freely in watery fluids; most are not stored in the body
Water soluble vitamin excretion
readily excreted in the urine
Water soluble vitamin toxicity
toxicities are unlikely but possible with high doses from supplements
Water soluble vitamin requirements
needed in frequent doses (perhaps one to three days) because the body does not store most of them to an extent
Vitamin A soluble
fat (1)
Vitamin D soluble
fat (2)
Vitamin E soluble
fat (3)
Vitamin K soluble
fat (4)
Vitamin B soluble
water (1)
Vitamin C soluble
water (2)
Vitamin A precursor
beta-carotene
vitamin a
retinol
vitamin a sources
animals, plants
vitamin a normal range
500-3000 micrograms a day
vitamin d
calcitriol
vitamin d sources
sunlight synthesis, milk/dairy, fortified products
vitamin d normal range
15 micrograms daily
vitamin e
tocopherol
vitamin e sources
anything w or made from oil (mayo, seeds, wheat germ also)
vitamin e normal range
15 mg
Vitamin k
phylloquinone (green plants) and menaquinone (bacterially synthesized)
vitamin k sources
intestinal bacteria and dark leafy green veggies
vitamin k normal range
120 micrograms (men) and 90 micrograms (women)
vitamin c
ascorbic acid
vitamin c sources
fruits and vegetables (and white potatoes)
vitamin c normal range
90mg (men) 75mg (women) [smokers add 35]