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C3 Food Matters
Most of the food we eat is produced by intensive farming, but an increasing proportion is
produced by organic farming. If farmers in the UK want to claim that their products are
organic, they have to follow UK national of agriculture use synthetic fertilisers. These contain
nutrients…

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The methods used in organic farming are likely to cause less damage to the environment than the
synthetic chemicals used in intensive farming.

Developments in food production may have a significant effect on our lives. Scientific research
and applications, including those involved with agriculture, are controlled by official
regulations and…

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Manufacturers use food additives to create products that people want to buy. They may also
increase how long the food will last.
There are several types of food additive, each used in food for a different purpose.
Colourings
These may be used to replace the natural colours lost as the…

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Flavourings do not have E numbers, but they are controlled by other laws.

Contamination and cooking
Mould and bacteria may grow in food if it is not stored correctly. Some release toxic chemicals as
they grow.
Aflatoxins are produced by moulds growing on nuts and dried fruit. These chemicals can…

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Amino acids
Cells grow by building up amino acids from the blood into new proteins.
These parts of the body are made mainly from protein:
muscle
tendons
skin
hair
haemoglobin (in blood)
Excess amino acids are broken down in the liver to form urea. This is excreted by the kidneys…

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It is important that the concentration of glucose, which is a type of sugar, in the blood stays at a near
constant level. There are serious consequences if blood sugar concentration goes outside a narrow
range.
The consequences are that:
too little glucose causes confusion, unconsciousness, even coma
too much…

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Eating a poor diet and being obese both increase the risk of developing type 2 diabetes. Despite this
increased risk, many people continue to eat poorly and many people are obese.


Eating a poor diet increases the
risk of developing Type 2
diabetes.

Personal choices
People make personal choices in…

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