Importance of nutrition in our daily life
so why do we actually need food well is to suppliers with fuel for energy it's to provide materials for growth and repair of
tissues and is to help fight disease and keep our bodies healthy but what is in food well food can be split up into seven
different nutrients carbohydrates lipids and proteins vitamins and minerals and fiber and water so carbohydrates
carbohydrates can
So there glucose you need for that reaction comes from our carbohydrates but if you have too much carbohydrates too
much energy then your body decides to store that as fat and it can create give your obesity or could cause tooth decay
lipids now lipids is the proper name for fats and oils food high animal fats includes meat butter cheese milk eggs and oily
fish and foods high in plant oils include olive oil sunflower oil rape soil and margarine on the whole
Things like beans peas and nuts but meat is a primary source of protein it's a better source of protein and what we need it
for with it for growth and repair of tissues replacing cells.
very important when you're growing as a baby or an adolescent
but also even when you stopped growing you need to replace cells constantly every day and we need proteins in order to
do that vitamins so there's a couple of vitamins you need to know about vitamin A which
Is used to maintain the retina in your eye and you get that from carrots fish liver oils liver butter and margarine so that old
wives tale of carrots helping you see in the dark there's actually bit of truth to that because they're high in vitamin A which
is used to help build your retina vitamin C which is used to sort of stick cells together lining surfaces to make stuff called
we call connective tissues and it's found in fruit and vegetables especially citrus
Fruits and if you don't get enough vitamin C it can cause scurvy where you're sort of fingernails will start to bleed and
bleeding gums very famously pirates always got scurvy because if you went on long voyages you could never take any
fresh fruit and vege with you even though you could take animals to slaughter and and carbohydrates you couldn't get
vitamin C and lastly vitamin D which helps bones absorb calcium and you get that from things
Like fish nibblers again and also from dairy products but it's also made in your skin when you're exposed to sunlight what
about minerals so there's two major minerals really that you need to know about but a lot of these minerals are the same
elements you would find on a periodic table we're gonna look at calcium which is used for making teeth and bones very
high in dairy products and fish and bread and some vegetables
Seven nutrients and it's very very important we need it obviously to stay hydrated what that means really is to make sure
that osmosis works properly between ourselves and our blood and our tissue fluid.
we don't want ourselves to dribble up
don't get enough water but equally, we don't want our blood pressure to step too high if we have too much so water levels must be maintained also because it's our blood plasma a lot of reactions take place there and we use it to transport stuff around our body so it's very very important you need to drink about between
1.5 and 2 liters of water a day the last Lutheran is now about is fiber now dietary fiber isn't actually something that you
digest and absorb but it's very very important for maintaining what we call digestive transit your food needs to pass
through the digestive system from your mouth to your anus and along that to help it sort of along that
Because it won't move fast enough through now you don't need all these seven nutrients in equal amounts that wouldn't
be a healthy diet a balanced diet has all the seven nutrients in the correct amounts.
so this pyramid here is a bit of a
representation of that you have carbohydrates at the bottom there and then fruit and vegetables next one protein dairy
and some fats at the top realistically now we're thinking actually need a lot more fruit and
Vegetables even that's shown by this pyramid a lot of people end up having too much dairy fats and protein and not
enough of the fruit and vegetables underneath to maintain a healthy balanced diet but not everybody's diet is the same
different people who have different jobs or different ages will potentially need different diets because they have different
energy requirements the larger the average body mass the more energy is actually required a
Daily basis you're going to use up more energy a manual worker is going to need more energy per day than an office
worker so it's important to eat the diet that is right for your lifestyle .
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