VITAMINS Flashcards
What’s the difference between water and fat soluble vitamins?
Fat soluble vitamins can be stored in the body but water soluble vitamins can’t (require daily)
Water soluble vitamins
Vitamin B (Thiamin, Riboflavin, Niacin, Folic Acid, Cobalamin)
Vitamin C
Fat soluble vitamins
Vitamin A (retinol and carotene)
Vitamin D (calciferol)
Vitamin E
Vitamin K
Name of B1
Thiamin
Function of B1
Release of energy from carbs
Helps nerves/growth of body
Sources of B1
Cereals
Yeast
Animal sources
Seeds/nuts/beans
Effects of deficiency of B1
Slow growth / development
Muscle wastage
Name of B2
Riboflavin
Function of B2
Release energy from carbs
Helps growth
Keeps skin healthy
Sources of B2
Liver/kidneys
Egg
Milk
Green veg
Effects of deficiency of B2
Dry skin
Poor growth
Name of B3
Niacin
Function of B3
Release energy from carbs
Healthy skin/nerves
Lowers levels of fat in blood
Sources of B3
Animal sources
Cereals/grains
Pulses
Effects of deficiency of B3
Pellagra (diarrhoea -> dermatitis -> dementia)
Effects of excess of B3
Only if excess supplements
Skin flushes
Liver damage
Name for B9
Folic acid
Function of B9
Process of protein
Formation of DNA in body cells (red blood cells)
Prevents neural tube defects in pregnancy (spina bifida)
Sources of B9
Liver/kidneys
Wholegrains
Pulses
Dark leafy veg
Effects of deficiency of B9
Tiredness
Anaemia
Spina bifida
Effects of excess in B9
Disguise B12 deficiency
Name of B12
Robalamin
Function of B12
Forms protective coating around nerve cells
Production of new cells
Sources of B12
Animal products
Supplements (vegans)
Effects of deficiency of B12
Tiredness
Anaemia
Muscle weakness
Depression
Memory problems
Effects of methods of cooking of B vitamins
Destroyed by cooking in water - nutrients leached so water is used to make gravy/sauce
Leaching reduced by steaming
Name of vitamin C
Ascorbic acid
Function of vitamin C
Helps absorption of iron
Produces collagen - connective tissue in meat to help bind cells
Antioxidant - protects body against harmful chemicals
Sources of vitamin C
Citrus fruits
Blackcurrants
Kiwi
Tomatoes
Green leafy veg
Effects of deficiency of vitamin C
Anaemia - slight
Scurvy - severe (tiredness/bleeding gums)
Effects of excess of B12
Normally excreted, excess of supplements
Nausea/diarrhoea
Effects of heat on vitamin C
Destroyed by exposure to heat/water (leaching)
Effects of methods of cooking of vitamin C
Should be served as fresh as possible
Steaming best (reduces leaching)
Names for vitamin A
Retinol (animal sources)
Carotene (plant sources)
Function of vitamin A
Effects eyesight - supplies retina with substances to see in dim light
Keeps throat/digestive system/lungs moist
Antioxidant - protects body against harmful chemicals
Sources of retinol
vitamin A - animal sources
Dairy products
Oily fish
Liver/pâté
Sources of carotene
Vitamin A - plant sources
Red/orange fruit
(Carrots/ apricots/ peppers/ tomatoes)
Green leafy veg
Effects of deficiency of vitamin A
Night blindness (can’t see in dim light)
Lack of immunity
Poor skin quality
Effects of excess of vitamin A
Poisonous - builds up in liver
Pregnant women should avoid too much retinol (birth defects)
Effects of heat/cooking on vitamin A
Not destroyed
Name for vitamin D
Calciferol
Function of vitamin D
Controls the amount of calcium absorbed from food
Helps develop strong bones/teeth
Sources of vitamin D
Dairy
Eggs
Oily fish
Fortified in margarine
Sunlight - stored in liver
Effects of deficiency of vitamin D
Bones/teeth with weaken
Rickets (bones bend in children)
Osteomalacia (adults)
Osteoporosis (old people brittle bones)
Effects of excess of vitamin D
Supplements
Excess stored in kidneys - damage
Encourage calcium to be removed - weakens bones
Effects of heat/cooking on vitamin D
Not destroyed