Transcript Allergies ppt

Allergies
Allergies
• The body has an immune system to
protect itself from harmful things such
as as viruses
• Food Intolerance is a reproductible
unpleasant reaction to a specific
substance.
• Food Allergy is a form of intolerence in
which there is evidence of abnormal
immunologicalreaction.
• True food intolerance affects less than
2%of population
• Sometimes a person’s
immune system will
react strongly to a
particular substance.
The person is said to be
allergic to this
substance .
Some allergic reactions cause • Eczema
• Asthma
• Skin irritations
• Headaches
• Sickness
• Breathing problems
• Hyperactivity
• Mood Changes
• Some allergies are very
serious and may cause an
Anaphylactic reaction.
• This requires adrenalin to
treat – in a very short time !.
Common Allergic Reactions are
from • Nuts
• Seafood
• Milk
• Eggs
• MSG
• Food Colourings
• Yeast
• Wheat
Nuts
• Certain foods can
cause anaphylaxis,
with peanuts and
other nuts being the
most common trigger.
• This is serious –
potentially fatal – it
can develop in a few
minutes after eating
the nuts or being in
close contact !
Seafood
• People who
are intolerant
to fish may
react by getting
a nettle rash,
but it can lead
to anaphylaxis
in some cases.
Milk
• About 2-3% of infants experience unpleasant
symptoms after consuming dairy foods. Milk
protein allergy is common in babies but many
children grow out of the allergy. People with
lactose intolerance cannot digest milk sugar –
causing symptoms such as cramps, diahorrea
and wind. They should avoid milk but can eat
cheese and yogurt because the lactose has
been changed to lactic acid.Lactolite is cows milk
with the enzyme lactose added. This enzyme
digests lactose and changes 95%of it to a more
digestible form
• Children with milk allergy often develop
hypersensitivity to other foods especially eggs,
soya, peanuts, citrus, fish and other cereals.
Eggs
• A small number are
allergic to eggs
causing sickness and
headaches.
Monosodium Glutamate
• MSG is a flavour enhancer used in protein
based dishes – chicken, pork, beef. It is
added to many processed foods and to
savoury snacks. MSG also forms an
important part in Chinese cooking !
• Sensitive people may result in having
eczema, asthma, nausea and tiredness.
Food Colouring
• Many people particularly children have an
allergic reaction to colourings particularly
red and yellow. !! ( Tartrazine being the
main one )
• Causing – asthma, headaches and
hyperactivity.
Yeast
• Found in many fruits,
bread, wine and beer.
These must be
avoided by sensitive
people.
• Possible effects are
skin irritations, itching,
sickness and
headaches.
Wheat
• People with Coeliac condition are unable to eat
products made from wheat, barley, oats or rye as
they are sensitive the protein Gluten !
• The small intestine becomes damaged and is
unable to digest food properly.
• The condition is treated removing all food
containing wheat flour, oats, rye or barley from the
diet. Food labels must be checked carefully to
avoid any of the following – breadcrumbs,
hydrolysed wheat protein, rusk, wheat bran, wheat
flour, germ, wheat germ oil, gluten wheat starch
and wheat thickners.
• The only way to control this condition is to have
completely Gluten Free Diet !!
Research suggests It has been suggested that food intolerance
plays a part in a no. of chronic western
conditions.
These include IBS, Rheumatoid Arthritis and
possibly Multiple sclerosis.
Many sufferers are helped by illiminating –
cereals, coffee, milk.
TASK – Each
• 1. Research one of these allergens using books and
the internet.
• 2. Produce a factual and graphic project on the chosen
allergen. ( hand in on __________)
• 3. Your assignment is to include – Cover page,
Information on the allergen, statistics, suitable dishes,
weekly food plan for the person, state all references,
illustrations
• 4. Plan and prepare a 2 course meal, which is entirely
suitable for someone with this allergy. Practical work
date ---------
Use the following in your
research
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www.Allergy.org
www.kidswithfoodallergies.org
www.users.globalnet.co.uk
www.allergies.about.com
www.kidshealth.org
www.FoodAllergy.org
www.allergy.clinic.co.uk