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Facts About Allergies That You Should Know

Updated on July 22, 2018

Allergies are reactions in the body against substances that do not agree with your body system. The substances that do not agree with your body are called allergens.

When you come into contact with the allergens, your body system triggers off a series of reactions which in turn leads to symptoms called allergies.

What is an allergic reaction?

The immune system keeps the body healthy. The immune system protects the body against infections and diseases by attacking the germs that invade the body and by eliminating them.

When you are allergic to certain substances (allergens), the immune system thinks that it is harmful to your body and starts to attack and eliminate the allergens by producing Ig E antibodies. The antibodies stimulate the cells that are being attacked to release chemical substances into the blood stream.

These chemical substances that are released can cause allergic reactions in the body. Every time your body comes in contact with the allergens, you will have an allergic reaction.

Allergic reactions can be mild, like a runny nose, sneezing or itching of the skin. Sometimes the allergic reaction can be severe – an asthma attack, difficulty in breathing, swallowing, swelling of the lips, dizziness or loss of consciousness.

The severe allergic life-threatening reaction of the body is called anaphylaxis.

Anaphylaxis can occur minutes after the body is exposed to the allergen or can take hours for the symptoms to occur. This life-threatening condition can be treated with timely medical care.

What are antibodies?

Antibodies can be considered as soldiers who fight and kill foreign substances that can injure or infect the body in any way. They are produced by the immune system whenever there is an allergic reaction. The Ig E antibodies are a specific type of antibodies that are produced by the immune system to fight against the allergens.

Types of allergens

Allergens are substances that do not agree with your body. There are different types of allergens:

Food – These can be caused by milk, other dairy products, peanuts, seafood, wheat, soy, eggs, etc., Stomach upset, diarrhea, an itchy nose, rashes are some of the symptoms of food allergies.

Airborne particles – The air around you can also cause allergies. Allergies due to airborne particles can be triggered off by pollen in the air, dust mites, hair from cats or dogs, dust and shedding from carpets.

Medicines Medicines can also be the cause of allergic symptoms in some people. For example, some can have an allergic reaction when an antibiotic such as Penicillin is administered.

Chemicals – Chemicals in detergents, hair dyes, body creams, lotions, pesticides used on lawns, household cleaners can cause allergic reactions in your body system.

Things that you can do to prevent allergies

Allergies can be prevented by keeping away from the substance that causes an allergic reaction.

Avoid consuming any food that causes an allergic reaction.

Do not keep pets inside your house, hairs from their body can cause allergies.

Do not use carpets if you are allergic. Dust from carpets or any shredding of the carpet can trigger off an allergic reaction.

There are special types of anti-allergy blankets and bed coverings. You can use them to prevent allergies.

Keep your house dust free. Use a vacuum cleaner to remove dust and dust mites effectively.

When the weather is windy, try to stay indoors. Pollen in the air can cause allergic reactions when inhaled. If you have to go out, use a facial mask to prevent dust from entering your nose.

Remember prevention is better than the cure.

Air Purifiers to Prevent Allergies

Air Purifiers help to remove contaminants from air and reduce allergy symptoms. They help to filter pollen, dust, mites and other allergens. Air Purifiers help people who are prone to allergies or asthma.

Air Humidifiers to Prevent Allergies

Air Humidifiers maintain the moisture level in the air and prevents the air from totally drying up. When the air is moist, then the sinus does not entirely dry up, this helps to maintain the health of the sinus. When the sinus is healthy, then allergic symptoms are automatically reduced. There are air purifiers that also act as an air humidifiers.




Do you use an Air Purifier or an Air Humidifier?

See results

© 2012 Nithya Venkat


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    • Vellur profile imageAUTHOR

      Nithya Venkat 

      6 years ago from Dubai

      ChitrangadaSharan thank you, I hope your allergies are under control now. Thanks for the vote and share.

      Susan Recipes thank you for stopping by.

    • Susan Recipes profile image


      6 years ago from India

      Useful and informative hub. Thanks for sharing. Voted up.

    • ChitrangadaSharan profile image

      Chitrangada Sharan 

      6 years ago from New Delhi, India

      Very useful and informative hub!

      I have had allergies and I can understand how much awareness is required in this matter, otherwise it can turn out to be serious.

      Thanks for sharing it with others. Voted up and shared on HP!

    • Vellur profile imageAUTHOR

      Nithya Venkat 

      6 years ago from Dubai

      Audrey (brakel2) thank you and am glad you aere able to understand. I hope you and your daughter are fine now, take care. Nice meeting you too.

    • brakel2 profile image

      Audrey Selig 

      6 years ago from Oklahoma City, Oklahoma

      Excellent article vellur. Your explanations are easy to understand and impart knowledge to readers. My daughter has had three bad attacks from eating certain foods before exercising. My state is allergy haven. Thank you so much for sharing your knowledge. It is nice to meet you. Blessings Audrey. Pinning

    • Vellur profile imageAUTHOR

      Nithya Venkat 

      6 years ago from Dubai

      rasta1 yes spring begins and allergy starts I guess! Thank you for stopping by.

      Audrey (vocalcoach) thank you, an air purifier will definitely help if you are allergic and do not forget to vacuum off all the hair that falls off from your pets.

      Hackslap thank you and am glad you understood. An air purifier definitely will help. Take care and thank you for stopping by.

    • Hackslap profile image


      6 years ago from Sydney, Australia

      Very useful hub explained in simple easy to understand lingo .. Thankfully i don't suffer allergies but from time to time I've had a bad bout of hay fever during the Australian spring ..

      good tips and voted up ..perhaps I should try getting an air purifier this August

    • vocalcoach profile image

      Audrey Hunt 

      6 years ago from Idyllwild Ca.

      I know I am allergic to pet hair but I love my pets and allow my cat to sleep on my bed. I will invest in an air purifier. Hopefully it will help. Enjoyed all that I've learned from this magnificent and informative hub. Votes up and more and sharing.


    • rasta1 profile image

      Marvin Parke 

      6 years ago from Jamaica

      It will be spring soon and allergy season. Voted up and useful.

    • Vellur profile imageAUTHOR

      Nithya Venkat 

      6 years ago from Dubai

      tillsontitan yes there are more and more allergies every day and it is very difficult to find the source of allergy. Thank you for your visit and vote up.

    • tillsontitan profile image

      Mary Craig 

      6 years ago from New York

      The sad part of all this is it seems there are more and more allergies every day. Of course I realize better medicine has helped in diagnosis but still!

      Well done Vellur and very helpful too.

      Voted up, useful,, and interesting.

    • Vellur profile imageAUTHOR

      Nithya Venkat 

      6 years ago from Dubai

      Daisy thank you for reading and commenting. It is great that you read all the ingredients before you buy a new product and also try to find out the source of allergy when you have an allergic reaction. This will definitely help to keep allergies away. Take care.

      tobusiness thank you, as you say many people suffer from allergies. Thanks for stopping by and leaving a comment.

    • tobusiness profile image

      Jo Alexis-Hagues 

      6 years ago from Lincolnshire, U.K

      A very useful and informative hub, since more of us seem to be suffering from allergies this is very timely. Nice job!!

    • Daisy Mariposa profile image

      Daisy Mariposa 

      6 years ago from Orange County (Southern California)

      Nithya (Vellur),

      As someone who has had allergic rhinitis (hayfever) since she was seven years old, I found your article to be well-researched, informative, and useful.

      Regarding preventing food allergies, if I purchase a product in the supermarket which is "new" for me, I read all the ingredients. If I have an allergic reaction to something I ate in a restaurant, I try to learn what all the ingredients are. Avoiding foods to which one is allergic is very important.

    • Vellur profile imageAUTHOR

      Nithya Venkat 

      6 years ago from Dubai

      srsddn yes you are right God is great and he has provided many ways to protect our body. Thank you for your visit.

    • srsddn profile image


      6 years ago from Dehra Dun, India

      vellur, we all face some kind of allergy and by experience learn to counter it. God is great to provide us system to fight against these allergies. Thanks for summing up the ways to avoiding allergies. Useful and voted up.

    • Vellur profile imageAUTHOR

      Nithya Venkat 

      8 years ago from Dubai

      rajan jolly thank you, for stopping by and leaving a wonderful comment. Thank you for the vote too.

    • rajan jolly profile image

      Rajan Singh Jolly 

      8 years ago from From Mumbai, presently in Jalandhar, INDIA.

      Very useful and interesting hub. You have explained it all in simple layman's language that it can be understood easily. Thanks for sharing.

      Voted up & useful.


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