Vitamins Flashcards
(43 cards)
What are micronutrients?
Substances that the body needs in small doses
Vitamin sources
Plants and animals
Fat- soluble vitamin sources
Fatty foods, eg beef liver, butter, fatty fish, cheese
What does the body store in fat-soluble vitamins
It stores the vitamins that doesn’t use up in fat tissue, which is why the body doesn’t have to take in the same quantities of those vitamins every day.
Vitamin A role
Needed for growth, keeping immune system healthy, good skin, eyesight.
Antioxidant
Where can u get vitamin A from
Retinol, eg meat, full fat milk, fatty fish. You can also make retinol from carotene (found in carrots and other yellow/orange fruits)
Excess vitamin A disadvantages
Weakens bones
Pregnant women are advised to stay away from foods that contain a lot of vitamin A.
Too little vitamin A disadvantages
Weakens immune system, causes blindness at night, inflamed skin, stunts growth
Daily dose for Vitamin A by NHS
Men - 0.7mg
Women - 0.6mg
Vitamin D sources
Fish liver oils, fatty fish like tuna and salmon
Sunlight
Vitamin D role
AIDS mineral absorption, including calcium absorption. Our body’s needs calcium for teeth and bones.
Excess vitamin D disadvantages
Body may absorb too much calcium, excess calcium can cause damage to kidneys.
Too little vitamin D disadvantages
Bone diseases like osteomalacia (soft bones), osteoporosis (brittle bones) and rickets
Daily dose for vitamin D by NHS
0.01mg
What are the fat-soluble vitamins
A D E K
Vitamin E sources
Vegetable oils, nuts, seeds, green leafy vegetables
Vitamin E role
Helps boost immune system, healthy skin and eyes.
Antioxidant, meaning it can protect the body from free radicals
Excess vitamin E disadvantages
Nauseous, disrupt blood clotting, blurred vision
Too little vitamin E disadvantages
Weak muscles, eyesight problems
Daily dose of vitamin E from NHS
Men - 4mg
Women - 3mg
Vitamin K sources
Leafy greens, liver, green tea, cheese
Vitamin K role
Supports immune system, helps maintain healthy bones, helps blood clotting and healing wounds.
Excess vitamin K disadvantages
You can’t have too much
Too little vitamin K disadvantages
Although adults are very unlikely to have too little vit K, newborn babies can suffer from uncontrolled bleeding if they have too little.