Anaemia
Anaemia is a condition which occurs when you have an abnormally low amount of red blood cells
. Red blood cells contain haemoglobin, a red pigment which gives blood its colour. The job of haemoglobin is to carry oxygen around the body. When red blood cells and therefore haemoglobin are low the blood fails to supply the body's tissues with sufficient amounts of oxygen. As your lungs and heart will then have to work harder to get oxygen into the blood, symptoms of anaemia, such as difficulty in breathing will begin to develop.
Red blood cells are made in the bone marrow and circulate in the blood. They only have a life expectancy of about four months.
The body needs iron, vitamin B12 and folic acid (one of the B group of vitamins) to produce more red blood cells. If there is a lack of one or more of these nutrients, anaemia will develop.
Iron deficiency anaemia is the most common type of anaemia.
Iron deficiency is more frequent in women who smoke, eat a diet low in iron and have heavy periods.
Some people with anaemia don't have any symptoms for months. When symptoms do appear, common ones include lethargy, weakness, dizzy spells and feeling faint.
As the anaemia becomes more severe, shortness of breath, palpitations, headaches, sore mouth and gums, and brittle nails may cause problems. People may look pale and find that others around them notice they're looking peaky.
The best way to prevent anaemia is to eat a healthy, balanced diet. For most people, this sort of diet provides enough essential nutrients, without the need for supplements.
As a guide, the main nutrients you need to make healthy red blood cells are:
* iron - in meat, liver, green vegetables, dried fruit, pulses (eg chick peas and lentils) and fortified foods such as some breakfast cereals and bread
* vitamin B12 - in meat, milk, cheese, eggs and fortified foods such as some breakfast cereals and bread. It is not found in vegetables
* folate - in liver, yeast extract, green leafy vegetables (such as peas and spinach), oranges, milk and fortified foods such as some breakfast cereals and bread
If you don't eat animal products (a vegan diet) or have a condition that affects how well you can absorb nutrients (eg coeliac disease), you may need to take supplements of nutrients. You should also get advice from a doctor or a registered dietician.
If you are pregnant, you are more likely to get a form of iron-deficiency anaemia. Your antenatal checks will include regular blood tests to check your haemoglobin levels. Your doctor or midwife will prescribe iron supplements if you need them.
by: Cherie Ang CL
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