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Minerals
Sodium, Calcium and Iron

What are minerals?
Minerals are substances required by the body for a variety of functions.

Minerals are micro nutrients- only needed in small quantities. Some minerals are
needed in larger amounts than others e.g. calcium, sodium and chlorine. Others are
required in smaller amounts and…

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Calcium rich foods must be eaten regularly to keep the bones strong. If there is
not enough calcium or vitamin D in the diet, the bones become soft and pliable.
This causes rickets in children and osteomalacia in adults. Osteoporosis is also a
condition worsened by a diet deficient in…

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Sources:
Meat
Liver
Green leafy veg. and
Dried fruit.

Deficiency
Anaemia ­ reduced level of haemoglobin in blood.

Requirements for adults:
RNI for men 8.7mg a day. RNI for women 14.8mg a day.

Iron is necessary for healthy blood. It helps form the pigment HAEMOGLOBIN
in the red blood cells…

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Caffeine reduces calcium absorption.
Reducing amounts of protein as large amounts cause calcium loss.
Sodium:

Function:
Controls water balance of the body

Sources:
Salt added at the table and when cooking
Bacon
Salt fish
Cheese
Snack food


Deficiency:
Is unlikely.

Requirements for adults:
RNI for adult's 1600mg a day. 6g…

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Tips to reduce slat intake:
Read food labels to see if they give the amount of sodium or salt they
contain.
Ready meals are already salted so do not add any more.
Cook with less salt- use herbs, spices or lemons to give flavour.
Cut down on salty snacks such…

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6) Explain the difference between HAEM and NON HAEM iron.
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Q7) Certain factors can affect the absorption of iron and calcium. Explain one
below:
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Q8) Give one example of how we can reduce are salt intake:
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